SOLUTION: If y/x=4 and x+y=5, then x is: Please show steps and solution.

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Question 340667: If y/x=4 and x+y=5, then x is: Please show steps and solution.
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=5 x=5-y
y/x=4
y/5-y=4
y=4(5-y)
y=20-4y
5y=20
y=4
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x+y=5
x+4=5
x=1
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