3-6=12y+21

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Solution for 3-6=12y+21 equation: 



3-6=12y+21

We move all terms to the left:

3-6-(12y+21)=0

We add all the numbers together, and all the variables

-(12y+21)-3=0

We get rid of parentheses

-12y-21-3=0

We add all the numbers together, and all the variables

-12y-24=0

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

-12y=24

y=24/-12

y=-2

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