Posted by brittney on Tuesday, August 24, 2010 at 5:58pm.
Write 1st Eq in STD form:
x - 4y = 13
2x + 16y = 20
Multiply 1st Eq by -2:
-2x + 8y = -26
2x + 16y = 20
Add the 2 Eq:
24y = -6
y = -1/4
Substitute -1/4 for y in the 1st Eq
and solve for x:
x - 4(-1/4) 13
x = 12.
(12 , -1/4).
3x + 4y = -12
6x + 8y =-16
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