2-3*(2х+2)=4х3х+5+(х+5)=(1-х)+410*(х-9)=71-5х=-6х+82х+2=-3 посчитайте ​

1) x = 0. 8

2) x = -1

3) x = 9. 7

4) x = 7

5) x = -2. 5

1) 2 - 3*(2x+2)=4x

2 - 6x + 6 = 4x

-6x - 4x = -2 - 6

-10x = -8

x = -8 / (-10)

x = 0. 8

2) 3x+5+(x+5)=(1-x)+4

3x+5+x+5=(1-x)+4

4x + 10 = 1 - x + 4

4x + x = -10 + 1 + 4

5x = -5

x = -5 / 5

x = -1

3) 10 * (x - 9) = 7

10x - 90 = 7

10x = 97

x = 97 / 10

x = 9. 7

4) 1 - 5x = -6x + 8

6x - 5x = -1 + 8

x = 7

5) 2x + 2 = -3

2x = -3 - 2

2x = -5

x = -5 / 2

x = -2. 5