-9=8+w

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Solution for -9=8+w equation: 



-9=8+w

We move all terms to the left:

-9-(8+w)=0

We add all the numbers together, and all the variables

-(w+8)-9=0

We get rid of parentheses

-w-8-9=0

We add all the numbers together, and all the variables

-1w-17=0

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

-w=17

w=17/-1

w=-17

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