Ответ:
4/7 x - 1/4 x = 18
(16 - 7)*x / 28 = 18
9x/28 = 18
9x = 504
x = 56
ответ:56
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Ответ:
4/7 x - 1/4 x = 18
(16 - 7)*x / 28 = 18
9x/28 = 18
9x = 504
x = 56
ответ:56