Предмет: Математика, автор: taturl

3*(4X-5)-(7x+1)=-19,5

Ответы

Автор ответа: ВероникаЧ1

3*(4х-5)-(7х+1)=-19,5
12х-15-7х-1=-19,5
12х-7х=-19,5+15+1
5х=-3,5
х=-0,7

Автор ответа: taturl

спасибо огромное))

Автор ответа: ВероникаЧ1

на здоровье!!!

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