Ответ:
273
Пошаговое объяснение:
x - 2/7 x - 5/13 x = 90
91x - 26x - 35x / 91 = 90
30x/91 = 90
x/91 = 3
x = 91 * 3
x = 273
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Ответ:
273
Пошаговое объяснение:
x - 2/7 x - 5/13 x = 90
91x - 26x - 35x / 91 = 90
30x/91 = 90
x/91 = 3
x = 91 * 3
x = 273