+130511 2x + y= -5 rearrage this as : y = -2x - 5 (1)
2y -x= 2 (2)
Now......substituting (1) into (2),we have
2 (-2x - 5) - x = 2 simplify
-4x - 10 - x = 2
-5x - 10 = 2 add 10 to both sides
-5x = 12 divide both sides by -5
x = -12/5
And using (1), we can find y......y = -2(-125) - 5 = 24/5 - 25/5 = -1/5
So ( x, y) = ( -12/5, -1/5)
