12=7w-8w

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Solution for 12=7w-8w equation: 



12=7w-8w

We move all terms to the left:

12-(7w-8w)=0

We add all the numbers together, and all the variables

-(-1w)+12=0

We get rid of parentheses

1w+12=0

We add all the numbers together, and all the variables

w+12=0

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

w=-12

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