255=2y+7

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Solution for 255=2y+7 equation: 



255=2y+7

We move all terms to the left:

255-(2y+7)=0

We get rid of parentheses

-2y-7+255=0

We add all the numbers together, and all the variables

-2y+248=0

We move all terms containing y to the left, all other terms to the right

-2y=-248

y=-248/-2

y=+124

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