-9=w-20

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Solution for -9=w-20 equation: 



-9=w-20

We move all terms to the left:

-9-(w-20)=0

We get rid of parentheses

-w+20-9=0

We add all the numbers together, and all the variables

-1w+11=0

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

-w=-11

w=-11/-1

w=+11

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