1/3a=21

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Solution for 1/3a=21 equation: 



1/3a=21

We move all terms to the left:

1/3a-(21)=0



Domain of the equation: 3a!=0

a!=0/3

a!=0

a∈R



We multiply all the terms by the denominator


-21*3a+1=0

Wy multiply elements

-63a+1=0

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

-63a=-1

a=-1/-63

a=1/63

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