Y+21=8y-63

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Solution for Y+21=8y-63 equation: 



+21=8Y-63

We move all terms to the left:

+21-(8Y-63)=0

We get rid of parentheses

-8Y+63+21=0

We add all the numbers together, and all the variables

-8Y+84=0

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

-8Y=-84

Y=-84/-8

Y=10+1/2

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