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Luyện Tập Chung
Hướng dẫn giải Bài 15 (Trang 13 SGK Toán Đại số 8, Tập 2)
<p>M&ocirc;̣t xe máy khởi hành từ Hà N&ocirc;̣i đi Hải Phòng với v&acirc;̣n t&ocirc;́c trung bình 32km/h. Sau đó 1 giờ, m&ocirc;̣t &ocirc; t&ocirc; cũng khởi</p> <p>hành từ Hà N&ocirc;̣i đi Hải Phòng, cùng đường với người đi xe máy vơi v&acirc;̣n t&ocirc;́c trung bình là 48km/h. Hãy vi&ecirc;́t phương</p> <p>trình bi&ecirc;̉u thị vi&ecirc;̣c &ocirc; t&ocirc; gặp xe máy sau x giờ, k&ecirc;̉ từ khi &ocirc; t&ocirc; khởi hành</p> <p><strong>Giải</strong></p> <p>Gọi x (giờ) là thời gian &ocirc; t&ocirc; đã chạy cho tới lúc gặp xe máy (x&gt;0) thì thời gian xe má đã đi cho tới lúc gặp &ocirc; t&ocirc; là x + 1</p> <p>Quãng đường &ocirc; t&ocirc; đã đi được là: 48x (km)</p> <p>Quãng đường xe máy đã đi cho tới lúc gặp &ocirc; t&ocirc; là: 32(x+1) (km)</p> <p>Vì quãng đường đi từ Hà N&ocirc;̣i cho tới ch&ocirc;̃ gặp nhau của hai xe là như nhau n&ecirc;n ta có phương trình;&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>48</mn><mi>x</mi><mo>=</mo><mn>32</mn><mo>(</mo><mi>x</mi><mo>+</mo><mn>1</mn><mo>)</mo></math></p>
Hướng dẫn Giải Bài 15 (Trang 13, SGK Toán 8, Tập 2, Phần Đại Số)
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class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise">Hướng dẫn giải Bài 14 (Trang 13 SGK Toán Đại số 8, Tập 2)</div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> 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</div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div>
Xem lời giải
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class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise">Hướng dẫn giải Bài 16 (Trang 13 SGK Toán Đại số 8, Tập 2)</div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div>
Xem lời giải
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class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div 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class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise"> <div class="n-content-exercise">Hướng dẫn giải Bài 17 (Trang 14 SGK Toán Đại số 8, Tập 2)</div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> 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</div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div>
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