3) 2x+10-3x+6=10
-x+6=0
x=6
1) -7x+10x-21=0
3x-21=0
x=7
2) 5х-7(3-х)=2х+11
5x-21+7x=2x+11
10x-33=0
x=3.3
4) 2(5-х)-5(2х-3)=1
10-2x-10x+14=0
-12x+24=0
x=2
1) -7
2) 3.1 3)6 4)2
3) 2x+10-3x+6=10
-x+6=0
x=6
1) -7x+10x-21=0
3x-21=0
x=7
2) 5х-7(3-х)=2х+11
5x-21+7x=2x+11
10x-33=0
x=3.3
4) 2(5-х)-5(2х-3)=1
10-2x-10x+14=0
-12x+24=0
x=2
1) -7
2) 3.1
3)6
4)2