Réponses

2014-04-29T12:03:30+02:00
Salut :)

3x + 2 = 2x - 5
x + 2 = -5
x = -7

-3x + 7 = 3x - 11
7 = 6x - 11
18 = 6x
x = 18/6
x = 3

-5x + 4 = 6x + 8
4 = 11x + 8
-4 = 11x
x = -4/11

5 - 9x = -3x + 2

5 = 6x + 2
3 = 6x
x = 3/6
x = 1/2

J'espère t'avoir aidé(e) ! :)