Ответы на вопрос:
15\9: (х+5)=55\81: 3 1\7 55/81*(x+5) = 1 5/9 * 3 1/7 55/81*(x+5) = 14/9 * 22/7 55/81*(x+5) = 44/9 55(x+5) = 44/9 * 81 55(x+5) = 396 x + 5 = 396/55 x = 36/5 - 5 x = 2 1/5
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