Respostas

2014-03-15T21:17:04-03:00
X=12-y

X-y=8
12-y-y=8
-y-y=8-12
-2y=-4
2y=4
Y=4/2
Y=2

X=12-y
X=12-2
X=10
5 5 5
A melhor resposta!
2014-03-15T21:17:42-03:00