5y-12=8+9y

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



5y-12=8+9y

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

5y-9y-8-12=0

We add all the numbers together, and all the variables

-4y-20=0

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

-4y=20

y=20/-4

y=-5

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