54=3y-9

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Solution for 54=3y-9 equation: 



54=3y-9

We move all terms to the left:

54-(3y-9)=0

We get rid of parentheses

-3y+9+54=0

We add all the numbers together, and all the variables

-3y+63=0

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

-3y=-63

y=-63/-3

y=+21

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