12=w-1-7

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Solution for 12=w-1-7 equation: 



12=w-1-7

We move all terms to the left:

12-(w-1-7)=0

We add all the numbers together, and all the variables

-(w-8)+12=0

We get rid of parentheses

-w+8+12=0

We add all the numbers together, and all the variables

-1w+20=0

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

-w=-20

w=-20/-1

w=+20

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