21.2=y-7.5

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Solution for 21.2=y-7.5 equation: 



21.2=y-7.5

We move all terms to the left:

21.2-(y-7.5)=0

We get rid of parentheses

-y+7.5+21.2=0

We add all the numbers together, and all the variables

-1y+28.7=0

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

-y=-28.7

y=-28.7/-1

y=28+0.7/1

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