21=y/5-8

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Solution for 21=y/5-8 equation: 



21=y/5-8

We move all terms to the left:

21-(y/5-8)=0

We get rid of parentheses

-y/5+8+21=0

We multiply all the terms by the denominator


-y+8*5+21*5=0

We add all the numbers together, and all the variables

-1y+145=0

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

-y=-145

y=-145/-1

y=+145

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