Question

Решите уравнения:
а) 3(х-7)-(9-2х)=2(12-х)-(х-10)
б) 4(2-3х)-2(9х-8)=15(1-х)+3(4-х)

Answer 1

3х-21-9+2х=24-2х-х+10
3х+2х+2х+х=24+10+21+9
8х=64
х=8

8-12х-18х+16=15-15х+12-3х
-30х+18х=15+12-16-8
-12х=3
х=-1/4=-0,25