SOLUTION: solve system using addition method -4x+y=4 -16x-4y=16 solution (?,?)

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Question 207842: solve system using addition method
-4x+y=4
-16x-4y=16
solution (?,?)
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
-4x+y=4 multiply by 4 & add
-16x-4y=16
-16x+4y=16
--------------------
-32y=32
y=32/-32
y=-1 ans.
-4x-1=4
-4x=4+1
-4x=5
x=5/-4
x=-5/4ans.
solution (-5/4,-1)
Proof:
-16*(-5/4)+4*-1=16
80/4-4=16
20-4=16
16=16