Предмет: Алгебра, автор: Gtaster

5x+(3x-7)=9 Нужен ответ и проверка !!!

Ответы

Автор ответа: Мариночка1

0

5х+(3х-7)=9

5х+3х-7=9

8х=9+7

8х=16

х=2

проверка:

5*2+(3*2-7)=10+(6-7)=10+(-1)=9

Автор ответа: Ритусенок

0

5х+(3х-7)=9

5х+3х-7=9

8х-7=9

8х=9+7

8х=16

х=16:8

х=2

ПРОВЕРКА:

5*2+(3*2-7)=9

10+(6-7)=9

10+(-1)=9

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