-21=4w+3

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Solution for -21=4w+3 equation: 



-21=4w+3

We move all terms to the left:

-21-(4w+3)=0

We get rid of parentheses

-4w-3-21=0

We add all the numbers together, and all the variables

-4w-24=0

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

-4w=24

w=24/-4

w=-6

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