SOLUTION: 4x+4y=5 (2x+8y=-5)

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Question 729412: 4x+4y=5 (2x+8y=-5)
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
4x+4y=5 MULTIPLY BY -2 & ADD.
2x+8y=-5
-8X-8Y=-10
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-6X=-15
X=-15/-6
X=2.5 ANS.
4*2.5+4Y=5
10+4Y=5
4Y=5-10
4Y=-5
Y=-5/4
Y=-1.25 ANS.
PROOF:
2*2.5+8*-1.25=-5
5-10=-5
-5=-5