9=2y-9

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Solution for 9=2y-9 equation: 



9=2y-9

We move all terms to the left:

9-(2y-9)=0

We get rid of parentheses

-2y+9+9=0

We add all the numbers together, and all the variables

-2y+18=0

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

-2y=-18

y=-18/-2

y=+9

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