18=21/4b

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Solution for 18=21/4b equation: 



18=21/4b

We move all terms to the left:

18-(21/4b)=0



Domain of the equation: 4b)!=0

b!=0/1

b!=0

b∈R



We add all the numbers together, and all the variables

-(+21/4b)+18=0

We get rid of parentheses

-21/4b+18=0

We multiply all the terms by the denominator


18*4b-21=0

Wy multiply elements

72b-21=0

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

72b=21

b=21/72

b=7/24

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