21y=63+-10y

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Solution for 21y=63+-10y equation: 



21y=63+-10y

We move all terms to the left:

21y-(63+-10y)=0

We add all the numbers together, and all the variables

21y-(-10y)=0

We get rid of parentheses

21y+10y=0

We add all the numbers together, and all the variables

31y=0

y=0/31

y=0

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