21=w/9+18

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Solution for 21=w/9+18 equation: 



21=w/9+18

We move all terms to the left:

21-(w/9+18)=0

We get rid of parentheses

-w/9-18+21=0

We multiply all the terms by the denominator


-w-18*9+21*9=0

We add all the numbers together, and all the variables

-1w+27=0

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

-w=-27

w=-27/-1

w=+27

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