SOLUTION: x+y=4 y=x i know the answer but i don't know how to solve this.

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Question 319595: x+y=4
y=x
i know the answer but i don't know how to solve this.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=4
y=x
..
plug the value of y in the equation x+y=4
x+x=4
2x=4
x=2
so y=2