Y=21-10x

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Solution for Y=21-10x equation: 



=21-10Y

We move all terms to the left:

-(21-10Y)=0

We add all the numbers together, and all the variables

-(-10Y+21)=0

We get rid of parentheses

10Y-21=0

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

10Y=21

Y=21/10

Y=2+1/10

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