12.5=y+4

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Solution for 12.5=y+4 equation: 



12.5=y+4

We move all terms to the left:

12.5-(y+4)=0

We get rid of parentheses

-y-4+12.5=0

We add all the numbers together, and all the variables

-1y+8.5=0

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

-y=-8.5

y=-8.5/-1

y=8+0.5/1

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