-3=-12+w

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Solution for -3=-12+w equation: 



-3=-12+w

We move all terms to the left:

-3-(-12+w)=0

We add all the numbers together, and all the variables

-(w-12)-3=0

We get rid of parentheses

-w+12-3=0

We add all the numbers together, and all the variables

-1w+9=0

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

-w=-9

w=-9/-1

w=+9

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