21=22/5+b

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Solution for 21=22/5+b equation: 



21=22/5+b

We move all terms to the left:

21-(22/5+b)=0



Domain of the equation: 5+b)!=0

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

b)!=-5

b!=-5/1

b!=-5

b∈R



We add all the numbers together, and all the variables

-(+b+22/5)+21=0

We get rid of parentheses

-b+21-22/5=0

We multiply all the terms by the denominator


-b*5-22+21*5=0

We add all the numbers together, and all the variables

-b*5+83=0

Wy multiply elements

-5b+83=0

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

-5b=-83

b=-83/-5

b=16+3/5

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