Sagot :
Bonjour
Résoudre en donnant toutes les étapes :
1) 2x-12=-3x+13
2x + 3x = 13 + 12
5x = 15
x = 15/5
x = 3
2) -7x-11=-3x+-17
- 7x + 3x = - 17 + 11
- 4x = - 6
x = 6/4
x = 3/2.
bonjour
2 x - 12 = - 3 x + 13
2 x + 3 x = 13 + 12
5 x = 25
x = 5
- 7 x - 11 = - 3 x - 17
- 7 x + 3 x = - 17 + 11
- 4 x = - 6
x = = 3 /2