1) 6х+7=5х+3
6х-5х=3-7
х=-4
2) 15х-4(3х+5)=7(2х+5)
15х-12х-20=14х+35
3х-14х=35+20
-11х=55
х=-5
3) 5(3х-8)-3(2-5х)=4х-20
15х-40-6+15х=4х-20
30х-4х=46-20
26х=26
х=1
4) 2(х-23)+3(15-х)=х+1
2х-46+45-3х=х+1
-х-х=1+1
-2х=2
х=-1
1) 6х+7=5х+3
6х-5х=3-7
х=-4
2) 15х-4(3х+5)=7(2х+5)
15х-12х-20=14х+35
3х-14х=35+20
-11х=55
х=-5
3) 5(3х-8)-3(2-5х)=4х-20
15х-40-6+15х=4х-20
30х-4х=46-20
26х=26
х=1
4) 2(х-23)+3(15-х)=х+1
2х-46+45-3х=х+1
-х-х=1+1
-2х=2
х=-1