21/5b=3/5b+8

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Solution for 21/5b=3/5b+8 equation: 



21/5b=3/5b+8

We move all terms to the left:

21/5b-(3/5b+8)=0



Domain of the equation: 5b!=0

b!=0/5

b!=0

b∈R





Domain of the equation: 5b+8)!=0

b∈R



We get rid of parentheses

21/5b-3/5b-8=0

We multiply all the terms by the denominator


-8*5b+21-3=0

We add all the numbers together, and all the variables

-8*5b+18=0

Wy multiply elements

-40b+18=0

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

-40b=-18

b=-18/-40

b=9/20

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