Réponses

2013-11-12T20:58:50+01:00
(2x+1/3)-(x-1/5)=(7x-2/15)
2x + 1/3 - x + 1/5 - 7x + 2/15 = 0
-6x + 5/15 + 3/15 + 2/15 = 0
-6x +10/15 = 0
-6x + 2/5 = 0
6x = 2/5
x = 2/30
x = 1/15

En espérant t'avoir aidé.