Réponses

2014-10-06T20:05:40+02:00
X+1/3(x-4) =  -2/5(x +7)
x+1/3x -4/3 =  -2/5x -14/5
x +1/3x +2/5x =  -14/5 +4/3
15/15x + 5/15x +6/15x =  -42/15 + 20/15
26/15x = - 22/15
x =  -22/15 * 15/26
x = -22/26
x = - 11/13