-2=7+w

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Solution for -2=7+w equation: 



-2=7+w

We move all terms to the left:

-2-(7+w)=0

We add all the numbers together, and all the variables

-(w+7)-2=0

We get rid of parentheses

-w-7-2=0

We add all the numbers together, and all the variables

-1w-9=0

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

-w=9

w=9/-1

w=-9

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