8y-9=12+5y

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Solution for 8y-9=12+5y equation: 



8y-9=12+5y

We move all terms to the left:

8y-9-(12+5y)=0

We add all the numbers together, and all the variables

8y-(5y+12)-9=0

We get rid of parentheses

8y-5y-12-9=0

We add all the numbers together, and all the variables

3y-21=0

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

3y=21

y=21/3

y=7

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