тема уравнения и неравенства​

1)

8x + 10 = 0

8x = - 10

x = -10/8

x = -1,25

2)

-5x - 7 = 0

-5x = 7

x = -7/5

x = -1,4

3)

10x+3 = 5

10x = 5-3

10x = 2

x = 2/10

x = 0,2

4)

-8x + 9 = -7

-8x = -16

x = 16/8

x = 2

5)

-3x + 4 = 7x

10x = 4

x = 4/10

x = 0,4

6)

x + 12 = 3x

2x = 12

x = 12/2

x = 6

7)

-7-x=3x+17

4x = 24

x = 24/4

x = 6

8)

x/2 + x/3 = 4

3x+2x / 6 = 4

5x / 6 = 4

5x = 24

x = 24/5

x = 4.8

9 не вижу