Question

120-(2х+8)=78Памагите

Answer 1

Ответ:

2х+8=120-78

2х+8=42

2х=42-8

2х=36

х=36:2

х=18

120-(2*18+8)=78

Answer 2

120-(2х+8)=78

120-2х-8=78

-2х=78-120+8

-2х=-34

х=34:2

x=17