8/2b=21

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Solution for 8/2b=21 equation: 



8/2b=21

We move all terms to the left:

8/2b-(21)=0



Domain of the equation: 2b!=0

b!=0/2

b!=0

b∈R



We multiply all the terms by the denominator


-21*2b+8=0

Wy multiply elements

-42b+8=0

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

-42b=-8

b=-8/-42

b=4/21

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