Resoudre l'equation : -3 (3x+1)-(2+x)=0

bonjour

- 9 x  - 3 - 2 - x = 0
- 9 x - x = 2 + 3
- 10 x = 5
- x = 5/0
x = - 1/5

- 3(3x + 1) - (2 + x) = 0
- 9x - 3 - 2 - x = 0
- 10x - 5 = 0
- 5 = 10x
- 5/10 = x
- 1/2 = x