Question

Уровнение
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

а) 3х-21-9+2х=24-2х-х+10
3х+2х+2х+х=10+21+9+24
8х=64
х=8
б) 8х-12х-18х+16=15-15х+12-3х
12х+18х-15х-3х=-12-15+8+16
12х=-3
х=-1/4