-18=w/7-21

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Solution for -18=w/7-21 equation: 



-18=w/7-21

We move all terms to the left:

-18-(w/7-21)=0

We get rid of parentheses

-w/7+21-18=0

We multiply all the terms by the denominator


-w+21*7-18*7=0

We add all the numbers together, and all the variables

-1w+21=0

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

-w=-21

w=-21/-1

w=+21

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