Ответ:

1) (327х - 5295) : 57 = 389

327х - 5295 = 389 * 57

327х - 5295 = 22173

327х = 22173 + 5295

327х = 27468

х = 27468 : 327

х = 84

Проверка: (327 * 84 - 5295) : 57 = 389

1) 327 * 84 = 27468

2) 27468 - 5295 = 22173

3) 22173 : 57 = 389

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2) (27x + 11) * 315 = 11 970

27x + 11 = 11970 : 315

27x + 11 = 38

27х = 38 - 11

27х = 27

х = 27 : 27

х = 1

Проверка: (27 * 1 + 11) * 315 = 11 970

1) 27 * 1 = 27

2) 27 + 11 = 38

3) 38 * 315 = 11970

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Пошаговое объяснение:

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