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Автор - Poyiot

Решением уравнения (90+15*(5x+177)):45=66

Ответ

Автор - OPetroW
(90 + 15 * (5x+ 177)) : 45 = 66
90 + 75x + 2655) : 45 = 66
75x + 2745 = 45 * 66
75x + 2745 = 2970
75x = 2970 - 2745
75x = 225
x = 3

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