7=9w-20

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Solution for 7=9w-20 equation: 



7=9w-20

We move all terms to the left:

7-(9w-20)=0

We get rid of parentheses

-9w+20+7=0

We add all the numbers together, and all the variables

-9w+27=0

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

-9w=-27

w=-27/-9

w=+3

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