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Question 815013: how do you solve for these equations 4x+2y=9 & 2x+10y=9 using elimination technique because I don't understand.
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! 4x + 2y = 9
2x + 10y = 9
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multiply by -2:
2x + 10y = 9
-4x - 20y = -18
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add:
4x + 2y = 9
-4x - 20y = -18
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-18y = -9
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y = 1/2
x = ?
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4x + 2y = 9
4x = 9 - 2y
x = 9/4 - (1/2)y
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x = 9/4 - (1/2)(1/2)
x = 9/4 - 1/4
x = 8/4
x = 2
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Answer:
x = 2
y = 1/2
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