SOLUTION: x+y = 4 y = x i know the answer but i don't know how to solve it in a proper way... thnx..

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Question 319626: x+y = 4
y = x
i know the answer but i don't know how to solve it in a proper way... thnx..
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x+y = 4
y = x
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Since y=x, x+x = 4
2x=4
x = 2
y = 2