3/4=21/b

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Solution for 3/4=21/b equation: 



3/4=21/b

We move all terms to the left:

3/4-(21/b)=0



Domain of the equation: b)!=0

b!=0/1

b!=0

b∈R



We add all the numbers together, and all the variables

-(+21/b)+3/4=0

We get rid of parentheses

-21/b+3/4=0

We calculate fractions

There is no solution for this equation

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