Bonsoir
4 x + 12 x - 6 = 3 x + 3
16 x - 3 x = 3 + 6
13 x = 9
x = 9/13
7 x - 5 x - 3 = 5 x - 15 + 2
2 x - 5 x = - 13 + 3
- 3 x = - 10
x = 10/3
- 15 x + 27 + 7 x = - 3 x + 2
- 8 x + 3 x = 2 - 27
- 5 x = - 25
x = 5
2 x - 6 + 6 x = - 8 x + 8 + 2
8 x + 8 x = 10 + 6
16 x = 16
x = 1
15 x - 5 = 4 x - 8
15 x - 4 x = - 8 + 5
11 x = - 3
x = - 3 /11
allez finis