-2=7+y

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Solution for -2=7+y equation: 



-2=7+y

We move all terms to the left:

-2-(7+y)=0

We add all the numbers together, and all the variables

-(y+7)-2=0

We get rid of parentheses

-y-7-2=0

We add all the numbers together, and all the variables

-1y-9=0

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

-y=9

y=9/-1

y=-9

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