3х-1=2(х-2)
3х-1=2х-4
3х-2х=-4+1
х=-3
3(х+5)=7-5х
3х+15=7-5х
3х+5х=7-15
8х=-8
х=-8:8
х=-1
19(у-9)=3(у+7)
19у-171=3у+21
19у-3у=171+21
16у=192
у=192:16
у=12
4(х-9)=3(х-8)
4х-36=3х-24
4х-3х=36-24
х=12
3(2х-9)=5(х-4)
6х-27=5х-20
6х-5х=27-20
х=7
7(3-2х)=15(1-х)
21-14х=15-15х
15х-14х=15-21
х=-6
а)3х-1=2(х-2)
3х-1=2(х-2)
3х-1=2х-4
3х-2х=-4+1
х=-3
3(х+5)=7-5х
3х+15=7-5х
3х+5х=7-15
8х=-8
х=-8:8
х=-1
19(у-9)=3(у+7)
19у-171=3у+21
19у-3у=171+21
16у=192
у=192:16
у=12
4(х-9)=3(х-8)
4х-36=3х-24
4х-3х=36-24
х=12
3(2х-9)=5(х-4)
6х-27=5х-20
6х-5х=27-20
х=7
7(3-2х)=15(1-х)
21-14х=15-15х
15х-14х=15-21
х=-6
а)3х-1=2(х-2)
3х-1=2х-4
3х-2х=-4+1
х=-3