Bonsoir/bonjour ,pouvez vous m’aidez a résoudre ces équations c’est important svp svp ,

Bonsoir,

1) 8 + 2x = 0
8 + 2x - 8 = -8
2x = -8
2x/2 = -8/2
x = -4

2) 10 - 3x = 0
10 - 3x - 10 = -10
-3x = -10
-3x/(-3) = -10/(-3)
x = 10/3

3) 5x - 2 = 3x + 1
5x - 3x = 1 + 2
2x = 3
x = 3/2

4) x - 1/3 = 2x + 5
x - 2x = 5 + 1/3
-x = 15/3 + 1/3
-x = 16/3
x = -16/3

5) 3x/4 - 1 = 0
3x/4 = 1
x = 1 * 4/3
x = 4/3

6) x/4 - 1 = 5
x/4 = 5 + 1
x/4 = 6
x = 6 * 4
x = 24

7) x/2 + 7 = x - 3
x/2 - x = -3 - 7
x/2 - 2x/2 = -10
-x/2 = -10
x = -10 * -2
x = 20

8) 3x/4 + 6 = x/2 - 2
3x/4 - x/2 = - 2 - 6
3x/4 - 2x/4 = -8
x/4 = -8
x = -8 * 4
x = -32

9) (x - 1)/3 = 2
(x - 1) = 2 * 3
x = 6 + 1
x = 7

10) (2x + 3)/5 = x/3
3(2x + 3) = 5x
6x + 9 = 5x
6x - 5x = -9
x = -9