Réponses

2013-10-22T15:17:10+02:00
X/2 +3.5 = 4x/3 - 7
x/2 - 4x/3 = -7 -3.5
3x/6 - 8x/6 = -10.5
-5x/6 = -10.5
-5x = -63
x = 63/5 (=12.6)