SOLUTION: if 2x+y=1 and x=1/2, what is y?

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Question 621377: if 2x+y=1 and x=1/2, what is y?
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
If you substitute that value 1%2F2 for x in 2x%2By=1 you get
2%2A%281%2F2%29%2By=1,
which simplifies to 1%2By=1,
which means highlight%28y=0%29
You know that if a number remains the same, nothing (zero) was added or subtracted.
If you want to show that as algebra, you may write
1%2By=1 --> 1%2By-1=1-1 --> y=0 subtracting 1 from both sides of the equation and simplifying.