-21-3w=4w+7

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Solution for -21-3w=4w+7 equation: 



-21-3w=4w+7

We move all terms to the left:

-21-3w-(4w+7)=0

We get rid of parentheses

-3w-4w-7-21=0

We add all the numbers together, and all the variables

-7w-28=0

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

-7w=28

w=28/-7

w=-4

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