Question

3(х+1)+7(х-3)=10(х+2)

Answer 1

Ответ:

3х+3+7х-21=10 (х+2)

3х+7х и 3-21

10х-18=10 (х+2)

10х-18=10+20

10х-18=30

10х=30-18

10х=12

х=12/10=1/1/2