SOLUTION: I must solve the equation using the add/subtract method 3x+9y=9 -x+5y=-3

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Question 370396: I must solve the equation using the add/subtract method
3x+9y=9
-x+5y=-3
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I must solve the equation using the add/subtract method
3x+9y=9
-x+5y=-3
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Multiply thru the lower equation by 3:
3x+9y = 9
-3x+15y = -9
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Add the two equations and solve for "y":
25y = 0
y = 0
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Substitute into -x+5y = -3 and solve for "x":
-x+0 = -3
x = 3
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Cheers,
Stan H.