Respostas

2013-07-12T21:04:47-03:00
| x y 1| x y
|2 -31| 2 -3
|8 1 1 | 8 1
-3x+8y+2-2y-x+24 =
-4x-6y+26=0
simplificando por 2..
-2x-3y+13=0
2 5 2