Tìm x: <span class="MathJax_Preview" style="color: inherit;"><span class="MJXp-math" id="MJXp-Span-1"><span class="MJXp-mstyle" id="MJXp-Span-2"><span class="MJXp-mn" id="MJXp-Span-3">1</span><span class="MJXp-mrow" id="MJXp-Span-4"><span class="MJXp-mfrac" id="MJXp-Span-5" style="vertical-align: 0.25em;"><span class="MJXp-box MJXp-script"><span class="MJXp-mn" id="MJXp-Span-6">5</span></span><span class="MJXp-box" style="margin-top: -0.9em;"><span class="MJXp-denom"><span><span class="MJXp-rule" style="height: 1em; border-top: none; border-bottom: 1px solid; margin: 0.1em 0px;"></span></span><span><span class="MJXp-box MJXp-script"><span class="MJXp-mn" id="MJXp-Span-7">7</span></span></span></span></span></span></span><span class="MJXp-mo" id="MJXp-Span-8" style="margin-left: 0.267em; margin-right: 0.267em;">×</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-9">x</span><span class="MJXp-mo" id="MJXp-Span-10" style="margin-left: 0.333em; margin-right: 0.333em;">=</span><span class="MJXp-mn" id="MJXp-Span-11">2</span><span class="MJXp-mrow" id="MJXp-Span-12"><span class="MJXp-mfrac" id="MJXp-Span-13" style="vertical-align: 0.25em;"><span class="MJXp-box MJXp-script"><span class="MJXp-mn" id="MJXp-Span-14">3</span></span><span class="MJXp-box" style="margin-top: -0.9em;"><span class="MJXp-denom"><span><span class="MJXp-rule" style="height: 1em; border-top: none; border-bottom: 1px solid; margin: 0.1em 0px;"></span></span><span><span class="MJXp-box MJXp-script"><span class="MJXp-mn" id="MJXp-Span-15">6</span></span></span></span></span></span></span></span></span></span><script type="math/tex" id="MathJax-Element-1">\Large1{5\over7}\times x=2{3\over6}</script> (Viết đáp án dưới dạng