3/5.b=21

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Solution for 3/5.b=21 equation: 



3/5.b=21

We move all terms to the left:

3/5.b-(21)=0



Domain of the equation: 5.b!=0

b!=0/5.

b!=0

b∈R



We multiply all the terms by the denominator


-21*5.b+3=0

Wy multiply elements

-105b+3=0

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

-105b=-3

b=-3/-105

b=1/35

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