y+7=9y-9

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



y+7=9y-9

We move all terms to the left:

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

We get rid of parentheses

y-9y+9+7=0

We add all the numbers together, and all the variables

-8y+16=0

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

-8y=-16

y=-16/-8

y=+2

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