21=8w-7+2w

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Solution for 21=8w-7+2w equation: 



21=8w-7+2w

We move all terms to the left:

21-(8w-7+2w)=0

We add all the numbers together, and all the variables

-(10w-7)+21=0

We get rid of parentheses

-10w+7+21=0

We add all the numbers together, and all the variables

-10w+28=0

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

-10w=-28

w=-28/-10

w=2+4/5

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