8y-12=3y+9

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Solution for 8y-12=3y+9 equation: 



8y-12=3y+9

We move all terms to the left:

8y-12-(3y+9)=0

We get rid of parentheses

8y-3y-9-12=0

We add all the numbers together, and all the variables

5y-21=0

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

5y=21

y=21/5

y=4+1/5

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