Question 154182: 3x+y=21
10x+5y=65
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 3x+y=21
10x+5y=65
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3x+y=21
10x+5y=65
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Multiply thru 1st equation by 5:
15x+5y= 105
10x+5y=65
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Subtact 2nd from 1st to solve for "x":
5x = 40
x = 8
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Substitute into 3x+y = 21 to solve for "y":
3*8 + y = 21
y = -3
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Ans: (8,-3)
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Cheers,
Stan H.
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