Respostas

2013-12-07T18:01:14-02:00
X=-1                                 
2.(-1)-y=-6
-2-y=-6
-y=-6+2
-y=-4   (-1)
y=4

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