Question

1 ) 3x-1=2 (x-2)
2) 3 (x+5)=7-5x
3) 19 (y-9)=3(y+7)
4) (x-9)=3 (x-8)
5) 3 (2x-9)=5(x-4)
6) 7(3-2x )=15 (1-x)
Помогите пожалуйста

Answer 1

3х-1=2(х-2)
3х-1=2х-4
3х-2х=1-4
х= -3

3(х+5)=7-5х
3х+15=7-5х
3х+5х=7 -15
8х= -8
х= -1

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

х-9=3(х-8)
х-9=3х-24
3х-х=24-9
2х=15
х=7 1/2

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