1-2(5-2х)=-х-4
1-10+4x=-x-4
5x=5 |:5
x=1
1-7(4+2х)=-9-4х
1-28-14x=-9-4x
-10x=18
x=-18/10
x=-9/5
5-2х=11-7(х+2)
5-2x=11-7x-14
5x=-8
x=-8/5
-2(5-3х)=7х+3;
-10+6x=7x+3
-x=13 |:(-1)
x=-13
3х+5+(х+5)=(1-х)+4
3x+5+x+5=1-x+4
5x=-5 |:5
x=-1
10х+9=7х
3x=-9
x=-3
-х-2+3(х-3)=3(4-х)-3
-x-2+3x-9=12-3x-3
5x=20
x=4
.......................................
1-2(5-2х)=-х-4
1-10+4x=-x-4
5x=5 |:5
x=1
1-7(4+2х)=-9-4х
1-28-14x=-9-4x
-10x=18
x=-18/10
x=-9/5
5-2х=11-7(х+2)
5-2x=11-7x-14
5x=-8
x=-8/5
-2(5-3х)=7х+3;
-10+6x=7x+3
-x=13 |:(-1)
x=-13
3х+5+(х+5)=(1-х)+4
3x+5+x+5=1-x+4
5x=-5 |:5
x=-1
10х+9=7х
3x=-9
x=-3
-х-2+3(х-3)=3(4-х)-3
-x-2+3x-9=12-3x-3
5x=20
x=4
.......................................