Bonjour,
N'oublies pas la formule de politesse la prochaine fois ;)
11x-9 = 5x + 3
11x -5x = 9+3
6x = 12
x = 12/6
x = 2
7x + 27 = 12x-3
7x -12x = -3 - 27
- 5x = -30
- x = - 30/5
x = 6
-3x + 2(x + 7) = 0
- 3x + 2x + 14 = 0
- 3x + 2x = -14
- x = - 14
x = 14
5(x-6)=5
5x - 30 = 5
5x = 5 + 30
5x = 35
x = 35/5
x = 7
Bonne soirée.
