2(х+3)=2х+6
4(1-х)=4-4х
3(5+х)=15+3х
6(3х-2)=18х-12
3(4-3х)=12-9х
2(х-10)=2х-20
4(2-5х)=8-20х
8(-3-х)=-24-8х
-2(-4-6х)=8+12х
3(х+2)=3х+6
