5/ Tìm x a) x × 86,7 + x 13,3 = 6,84 b) x - 6,7 ÷ 10 = 23,5 c) 9,35 + x × 2,5 = 79,35 d) (x - 4,6) ÷ 2,3 = 5,8

<div class="content-answer-1 enable-event-click" style="overflow-x:auto;text-justify:inter-word;text-align:justify"><p>5/</p><br /><p><strong>a x × 86,7 + x 13,3 = 6,84</strong></p><br /><p><span>x×(86,7+13,3)=6,84</span></p><br /><p><span>x×100=6,84</span></p><br /><p><span>x=0,0684</span></p><br /><p><strong>bx-6,7÷10=23,5</strong></p><br /><p><span> x-0,67=23,5</span></p><br /><p><span>x=24,17</span></p><br /><p><strong>c,9,35+x×2,5=79,35</strong></p><br /><p><span> x×2,5=70</span></p><br /><p><span>x=28</span></p><br /><p><strong>d(x-4,6)÷2,3=5,8</strong></p><br /><p><span> x-4,6=13,34</span></p><br /><p><span>x=17,94</span></p></div><div class="pt12"><div></div></div>