Question 428159: Solve using the elimination method. Show all work.
4x + 8y = 16
-2x + 5y = 55 Found 2 solutions by nerdybill, Alan3354:Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! 4x + 8y = 16
-2x + 5y = 55
.
Multiply bottom equation by 2 then add both equations together:
4x + 8y = 16
-4x + 10y = 110
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18y = 126
y = 7
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substitute above into top equation to find x:
4x + 8y = 16
4x + 8(7) = 16
4x + 56 = 16
4x = -40
x = -10
You can put this solution on YOUR website! 4x + 8y = 16
-2x + 5y = 55
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2x + 4y = 8 eqn 1 x 1/2
-2x + 5y = 55
--------------- Add
9y = 63
y = 7
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x = -10
