1/3b=21

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Solution for 1/3b=21 equation: 



1/3b=21

We move all terms to the left:

1/3b-(21)=0



Domain of the equation: 3b!=0

b!=0/3

b!=0

b∈R



We multiply all the terms by the denominator


-21*3b+1=0

Wy multiply elements

-63b+1=0

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

-63b=-1

b=-1/-63

b=1/63

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