-21=y/4+7

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Solution for -21=y/4+7 equation: 



-21=y/4+7

We move all terms to the left:

-21-(y/4+7)=0

We get rid of parentheses

-y/4-7-21=0

We multiply all the terms by the denominator


-y-7*4-21*4=0

We add all the numbers together, and all the variables

-1y-112=0

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

-y=112

y=112/-1

y=-112

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