7-3(х-1)=2х
7-3х+3=2х
-3х-2х=-7-3
-5х=-10
х=-10:-5
х=2
6(2х+0.5)=8х-(3х+4)
12х+3=8х-3х-4
12х-8х+3х=-4-3
7х=-7
х=-7:7
х=-1
5х-2(х-3)=6х
5х-2х+6=6х
5х-2х-6х=-6
-3х=-6
х=-6:-3
х=2
6х-(2х+5)=2(3х-6)
6х-2х-5=6х-12
6х-2х-6х=-12+5
-2х=-7
х=-7:-2
х=7/2
6-4(х+1)=3х
6-4х-4=3х
-4х-3х=-6+4
-7х=-2
х=-2:-7
х=2/7
3(х-2)=7+(2х-5)
3х-6=7+2х-5
3х-2х=7+6-5
х=8