Question

3х-1=2(х-2) 3(х+5)=7-5х 19(у-9)=3(у+7) 4(х-9)=3(х-8) 3(2х-9)=5(х-4) 7(3-2х) =15(1-х)

Answer 1

3х-2х=-4+1
х=-3

3х+15=7-5х
8х=-8
х=+1

19у-171=3у+21
16у=192
у=12

4х-36=3х-24
х=12

6х-27=5х-20
х=7

21-14х=15-15х
х=-6

Answer 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=-15+7
8х=-8
х=-1

19(у-9)=3(у+7) 
19у-171=3у+21
16у=192
у=12

4(х-9)=3(х-8) 
4х-36=3х-24
4х-3х=36-24
х=8

3(2х-9)=5(х-4) 
6х-27=5х-20
х=7

7(3-2х) =15(1-х)
21-14х=15-15х
х=-6