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Ответ

Проверено экспертом

Автор - IrkaShevko

Ответ:

17

Пошаговое объяснение:

умножим все на 12:

3(x - 5) = 12*7 - 4(2x - 11)

3x - 15 = 84 - 8x + 88

3x + 8x = 172 + 15

11x = 187

x = 187 : 11

x = 17

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