Y=21+2y

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Solution for Y=21+2y equation: 



=21+2Y

We move all terms to the left:

-(21+2Y)=0

We add all the numbers together, and all the variables

-(2Y+21)=0

We get rid of parentheses

-2Y-21=0

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

-2Y=21

Y=21/-2

Y=-10+1/2

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