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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