Предмет: Математика, автор: manazana475

7(6-3x)+6(3+2x)=57
СрочноРешите пожалуйста

Ответы

Автор ответа: Аноним

7

7 ( 6 - 3х ) + 6 ( 3 + 2х ) = 57

42 - 21х + 18 + 12х = 57

- 9х + 60 = 57

- 9х = 57 - 60

- 9х = -3

х = 3/9 = 1/3

Ответ : 1/3

Удачи ) )

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