bonjour pouvez-vous m'aider s'il vous plait

Bonjour,

8x = 4
x = 4/8
x = 1/2

5x + 6 = 31
5x = 31 - 6
5x = 25
x = 25/5
x = 5

9x - 7 = -34
9x = -34 + 7
9x = -27
x = -27/9
x = -3

-14 - 2x = -10
2x = -14 + 10
2x = -4
x = -4/2
x = -1/2

6x + 9 = 4x - 18
6x - 4x = -18 - 9
2x = -27
x = -27/2

-3x + 14 = 2x - 6
3x + 2x = 14 + 6
5x = 20
x = 20/5
x = 4

8x - 6 = 7x + 10
8x - 7x = 10 + 6
x = 4

x + 8 = 6x + 2
6x - x = 8 - 2
5x = 6
x = 6/5

-x - 3 = x + 14
x + x = -3 - 14
2x = -17
x = -17/2

9 + 2x = 7 - 5x
2x + 5x = 7 - 9
7x = -2
x = -2/7

4x - 8 = 2x + 9
4x - 2x = 9 + 8
2x = 17
x = 17/2

7x + 3 = 6 - 4x
7x + 4x = 6 - 3
11x = 3
x = 3/11

7 - x = 2x - 6
2x + x = 7 + 6
3x = 13
x = 13/3

5x = 2x
5x - 2x = 0
3x = 0
x = 0

3(2x - 7) = 6(3x + 4)
6x - 21 = 18x + 24
18x - 6x = -21 - 24
12x = -45
x = -45/12
x = -(3 x 15)/(3 x 4)
x = -15/4

-5(x + 3) = 4(8 - x)
-5x - 15 = 32 - 4x
5x - 4x = -15 - 32
x = -47

4x - 9 = 4x + 7
4x - 4x = 9 + 7
0 = 16

6x - 7 = 4x - 7
6x - 4x = -7 + 7
2x = 0
x = 0