А) (10х-3)+(14х-4)=8-(15-22х)
10x-3+14x-4=8-15+22x
10x+14x-22x=7+8-15
2x=0
x=0;
б) (2х+3)-(5х+11)=7+(13-2х)
2x+3-5x-11=7+13-2x
2x-5x+2x=8+7+13
-x=28
x=-28;
в) 7-10х-(8-8х)+(10х+6)=8
7-10x-8+8x+10x+6=8
8x=8-5
8x=3
x=3/8=0,375;
г) (2х+3)+(3х+4)+(5х+5)=12-7х
2x+3+3x+4+5x+5=12-7x
17x=0
x=0.