12+w+w=7w

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Solution for 12+w+w=7w equation: 



12+w+w=7w

We move all terms to the left:

12+w+w-(7w)=0

We add all the numbers together, and all the variables

-5w+12=0

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

-5w=-12

w=-12/-5

w=2+2/5

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