SOLUTION: 4x+8y=20 -4x+2y=-30 find (X,y)

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Question 684397: 4x+8y=20
-4x+2y=-30
find (X,y)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
4x+8y=20
-4x+2y=-30
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Add and solve for "y":
10y = -10
y = -1
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Solve for "x" using 4x + 8y = 20
4x -8 = 20
4x = 28
x = 7
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(x,y): x = 7 ; y = -1
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Cheers,
Stan H.