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Автор - willywonka001

Решите срочно!!! даю 25 баллов! 2,3 и 4 примеры!!!​

Ответ

Автор - svet127127

Ответ:

2) (2х+1)/3=6 |×3

2х+1=18

2х=18-1

2х=17

х=17÷2

х=8,5

3) 9-2х/3=7+х/3 |×3

27-2х=21+х

-2х-х=21-27

-3х=-6

х=-6÷(-3)

х=2

4) (3 1/3×3^2-17)÷13-0,07=0,93

1) 3 1/3×3^2=10/3×9=90/3=30

2) 30-17=13

3)13÷13=1

4) 1-0,07=0,93

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