Réponses

2013-12-16T18:54:28+01:00
6x - 21 + 21 = -10x - 8 -10 +21
6x = -10x + 3
6x + 10x = -10x + 10x + 3 
16x = 3
16x / 16 = 3/16
x = 3/16 
2013-12-16T18:55:12+01:00
Bonsoir

3(2x-7)=-2(5x+4)-10
6x -21 = -10x -8 -10
6x +10x = -8 -10 +21
16x = 3
x = 3/16