9y+7=13y-13

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Solution for 9y+7=13y-13 equation: 



9y+7=13y-13

We move all terms to the left:

9y+7-(13y-13)=0

We get rid of parentheses

9y-13y+13+7=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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