12/4=30/b

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Solution for 12/4=30/b equation: 



12/4=30/b

We move all terms to the left:

12/4-(30/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

-(+30/b)+12/4=0

We add all the numbers together, and all the variables

-(+30/b)+3=0

We get rid of parentheses

-30/b+3=0

We multiply all the terms by the denominator


3*b-30=0

We add all the numbers together, and all the variables

3b-30=0

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

3b=30

b=30/3

b=10

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