5(2-2x)=2(x-3)+4 2x-4(x+7)=3(2-x) 1,26x+3,58=1,74+6.46 0,88-(5,12+0,08y)=4.92y-y

-5(2-2x)=2(x-3)+4 
-10+10x=2x-6+4
-10+10x=2x-2
10x-2x=-2+10
8x=8
x=8:(-8)
x=-1

2x-4(x+7)=3(2-x)
2x-4x-28=6-3x
-2x-28=6-3x
-2x+3x=6+28
x=34

1,26x+3,58=1,74x+6.46
1,26x-1,74x=6,46-3,58
-0,48x=2,88
x=2,88:(-0,48)
x= -6

0,88-(5,12+0,08y)=4.92y-y
0,88-5,12-0,08y=3,92y
-4,24-0,08y=3,92y
3,92y+0,08y=-4,24
4y=-4,24
y=-4,24:4
y=-1,06