12+7w=7w+21

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Solution for 12+7w=7w+21 equation: 



12+7w=7w+21

We move all terms to the left:

12+7w-(7w+21)=0

We get rid of parentheses

7w-7w-21+12=0

We add all the numbers together, and all the variables

-9!=0

There is no solution for this equation

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