bonjour
3 x - 6 = 5 x + 5
3 x - 5 x = 5 + 6
- 2 x = 11
x = - 11/2
9 x - 18 = 6 x + 15
9 x - 6 x = 15 + 18
3 x = 33
x = 11
8 x + 20 = 4 x - 28
8 x - 4 x = - 28 - 20
4 x = - 48
x = - 12
5 x + 35 = 10 x - 35
5 x - 10 x = - 35 - 35
- 5 x = - 70
x = 14
