SOLUTION: I have homework for Algebra. I tried everything I know how to do. Can you help by showing me how to do it? The problem is -.3x+y=.5 , .5x-.3y=1.9 I know the answ
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Question 552831: I have homework for Algebra. I tried everything I know how to do. Can you help by showing me how to do it? The problem is -.3x+y=.5 , .5x-.3y=1.9 I know the answer because it was given to me by the yeacher. I just have to show how to do it. Please help!!!!! Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! -.3x+y=.5
.5x-.3y=1.9
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Multiply thru each equation by 10 to get:
-3x + 10y = 5
5x - 3y = 19
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Multiply thru the top equation by 5
Multiply thru the bottom equation by 3
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-15x + 50y = 25
15x - 9y = 57
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Add and solve for "y":
41y = 82
y = 2
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Solve for "x":
15x - 9y = 57
15x - 18 = 57
15x = 75
x = 5
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Cheers,
Stan H.
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