21=b/18

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Solution for 21=b/18 equation: 



21=b/18

We move all terms to the left:

21-(b/18)=0

We add all the numbers together, and all the variables

-(+b/18)+21=0

We get rid of parentheses

-b/18+21=0

We multiply all the terms by the denominator


-b+21*18=0

We add all the numbers together, and all the variables

-1b+378=0

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

-b=-378

b=-378/-1

b=+378

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