Question

решить уравнение 3(x-7)-(9-2x)=2(12-x)-(x-10)

Answer 1

3(х-7)-(9-2х)=2(12-х)-(х-10)
3х-21-9-2х=24-2х-х+10
5х-30=34-3х
5х+3х=30+34
8х=64
х=8