<span>17356
*
23
<u>
</u><u /> 34712
+
52068
<u>
</u>399188</span>
6 - 5х/14 - 4 = 7х - 8/21
(14 - 4)(7х - 8) = (6 - 5х)21
10(7х - 8) = 126 - 105х
70х - 80 = 126 - 105х
70х + 105х = 126 + 80
175х = 206
х = 206/175
х = 1 31/175
Решение в фотке:
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