-21=y/9

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Solution for -21=y/9 equation: 



-21=y/9

We move all terms to the left:

-21-(y/9)=0

We add all the numbers together, and all the variables

-(+y/9)-21=0

We get rid of parentheses

-y/9-21=0

We multiply all the terms by the denominator


-y-21*9=0

We add all the numbers together, and all the variables

-1y-189=0

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

-y=189

y=189/-1

y=-189

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