Réponses

2014-06-09T17:49:00+02:00
Bonjour

5x  = 10
x = 2


3x + 14 = 13x  +34
3x -13x = -14+34
10x = 20
x = 2

6x -4= 8x -8
6x -8 x =4-8
- 2x = -4
x = 2