-y+9=-7+y

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



-y+9=-7+y

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-1y-(y-7)+9=0

We get rid of parentheses

-1y-y+7+9=0

We add all the numbers together, and all the variables

-2y+16=0

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

-2y=-16

y=-16/-2

y=+8

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