1. а) -(7-3y)=8-8(+2-y)
– 7 + 3y = 8 – 16 + 8y
3y – 8y = – 16 + 8 + 7
-5y = -1
y = 0.2
б)-5(2-2x)=2(x-3)+4
– 10 + 10x = 2x – 6 + 4
10x – 2x = 4 – 6 + 10
8x = 8
x = 1
в)2х-4(x+7)=3(2-x)
2x – 4x – 28 = 6 – 3x
2x – 4x + 3x = 6 + 28
x = 34
2.а)1,26x+3,58=1,74x+6,46
1,26x – 1,74x = 6,46 – 3,58
-0.48x = 2.88
x = -6
б)0,88-(5,12+0,08y)=4,92y-y
0.88 – 5.12 – 0.08y = 4.92y – y
– 0,08y – 4,92y + y = 5,12 – 0,88
-4y = 4.24
y = -1.06
1. а) -(7-3y)=8-8(+2-y)
– 7 + 3y = 8 – 16 + 8y
3y – 8y = – 16 + 8 + 7
-5y = -1
y = 0.2
б)-5(2-2x)=2(x-3)+4
– 10 + 10x = 2x – 6 + 4
10x – 2x = 4 – 6 + 10
8x = 8
x = 1
в)2х-4(x+7)=3(2-x)
2x – 4x – 28 = 6 – 3x
2x – 4x + 3x = 6 + 28
x = 34
2.а)1,26x+3,58=1,74x+6,46
1,26x – 1,74x = 6,46 – 3,58
-0.48x = 2.88
x = -6
б)0,88-(5,12+0,08y)=4,92y-y
0.88 – 5.12 – 0.08y = 4.92y – y
– 0,08y – 4,92y + y = 5,12 – 0,88
-4y = 4.24
y = -1.06