21=3w-12+5w

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Solution for 21=3w-12+5w equation: 



21=3w-12+5w

We move all terms to the left:

21-(3w-12+5w)=0

We add all the numbers together, and all the variables

-(8w-12)+21=0

We get rid of parentheses

-8w+12+21=0

We add all the numbers together, and all the variables

-8w+33=0

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

-8w=-33

w=-33/-8

w=4+1/8

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