-21/3=3y/3

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Solution for -21/3=3y/3 equation: 



-21/3=3y/3

We move all terms to the left:

-21/3-(3y/3)=0

We add all the numbers together, and all the variables

-(+3y/3)-21/3=0

We add all the numbers together, and all the variables

-(+3y/3)-7=0

We get rid of parentheses

-3y/3-7=0

We multiply all the terms by the denominator


-3y-7*3=0

We add all the numbers together, and all the variables

-3y-21=0

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

-3y=21

y=21/-3

y=-7

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