mkedrov11 1)8х+3(7-2х)=4х+3
8х+21-6х=4х+3
8х-6х-4х=3-21
-2х=-18
х=9
2)23-4(3х+8)=1-17х
23-12х-32=1-17х
17х-12х=1+32-23
5х=10
х=2
3)4х+5(3-2х)=5-11х
4х+15-10х=5-11х
4х-10х+11х=5-15
5х=-10
х=-2
4)19-2(3х+8)=2х-37
19-6х-16=2х-37
19-16+37=2х+6х
40=8х
х=5

azamat29 1)8x+21-6x=4x+3
8x-6x-4x=3-21
-2x=-18
x=9
2)23-12x-32=1-17x
-12x+17x=1-23+32
5x=10
x=2
3)4x+15-10x=5-11x
4x-10x+11x=5-15
5x=-10
x=-2
4)19-6x-16=2x-37
-6x-2x=-37-19+16
-8x=-40
x=5