9=w-7

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Solution for 9=w-7 equation: 



9=w-7

We move all terms to the left:

9-(w-7)=0

We get rid of parentheses

-w+7+9=0

We add all the numbers together, and all the variables

-1w+16=0

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

-w=-16

w=-16/-1

w=+16

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