Réponses

2013-05-12T10:09:08+02:00

 2/3y-3y-4=1/5y+1/2

2/3y-3y-1/5y=1/2+4

-38/15y= 9/2

y= 9/2 : -38/15

  = 9/2*-15/38

  = -135/76