Question 263683: Solve using subtitution method
5x+3y = 80
2x+y = 30
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Solve using subtitution method
5x+3y = 80
2x+y = 30
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Solve the 2nd equation equation for "y":
y = -2x+30
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Substitute into the 1st equation and solve for "x":
5x + 3(-2x+30) = 80
-x + 90 = 80
x = 10
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Since y = -2x+30, y = 10
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Cheers,
Stan H.
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