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Question 272133: 2y=4x+8
x-3y= -7
Answer by oberobic(2304)   (Show Source):
You can put this solution on YOUR website! 2y = 4x +8
x - 3y = -7
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rearranging
-4x + 2y = 8
x - 3y = -7
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multiply the second equation by 4
4x - 12y = -28
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so, we have
-4x + 2y = 8
4x - 12y = -28
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add them
-10y = -20
y = 2
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substitute
2(2) = 4x + 8
4 = 4x + 8
-4 = 4x
x = -1
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checking
2(2) = 4(-1) + 8
4 = -4 + 8 = 4 TRUE
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-1 -3(2) = -7 TRUE
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Answer:
y = 2
x = -1
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