3y+13=9y-8

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Solution for 3y+13=9y-8 equation: 



3y+13=9y-8

We move all terms to the left:

3y+13-(9y-8)=0

We get rid of parentheses

3y-9y+8+13=0

We add all the numbers together, and all the variables

-6y+21=0

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

-6y=-21

y=-21/-6

y=3+1/2

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