Réponses

2013-09-30T09:26:53+02:00
2013-09-30T10:49:30+02:00
2x -1 = 5x +4
2x-5x = +1 +4
-3x = 5
x= -5/3

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