SOLUTION: 4^x/2^x+y=8

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Question 752844: 4^x/2^x+y=8
Answer by Okeke_Christian(26) About Me  (Show Source):
You can put this solution on YOUR website!
4%5Ex%2F2%5E%28x%2By%29=8
2%5E%282x%29%2F2%5E%28x%2By%29=2%5E3
2%5E%282x-%28x%2By%29%29=2%5E3
2%5E%282x-x-y%29=2%5E3
2%5E%28x-y%29=2%5E3
x-y=3
Huh? this question does not contain enough information to solve for either variable!
Thank You.