Question 835438: 5x + 2y = 8
x + y = 4
If you want to solve the system of equations by addition, which of the following could you do? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 5x + 2y = 8
x + y = 4
If you want to solve the system of equations by addition
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Multiply thru the bottom equation by -5::
5x + 2y = 8
-5x-5y = -20
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Add and solve for "y":
-3y = -12
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Divide by -3 to get:
y = 4
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Solve for "x":
x + y = 4
x + 4 = 4
x = 0
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Cheers,
Stan H.
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