9=2+w

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Solution for 9=2+w equation: 



9=2+w

We move all terms to the left:

9-(2+w)=0

We add all the numbers together, and all the variables

-(w+2)+9=0

We get rid of parentheses

-w-2+9=0

We add all the numbers together, and all the variables

-1w+7=0

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

-w=-7

w=-7/-1

w=+7

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