Réponses

2012-12-09T10:45:26+01:00

6(y+3)-2(y-1)=0

6y+18-2y+2=0

4y=-20

y =-5

 

 

 

2012-12-09T11:08:09+01:00

6 x (y+3)-2(y-1)=0

6 x y+18-2y+2=0

4y =-20

y = -5