Respostas

2014-04-23T00:51:01-03:00
x + 2y = 3 .(-2)
2x + 3y = 5

-2x -4y = -6
2x + 3y = 5
0 -y = -1
y = 1

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

P (1, 1)