1/3r+3=21

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Solution for 1/3r+3=21 equation: 



1/3r+3=21

We move all terms to the left:

1/3r+3-(21)=0



Domain of the equation: 3r!=0

r!=0/3

r!=0

r∈R



We add all the numbers together, and all the variables

1/3r-18=0

We multiply all the terms by the denominator


-18*3r+1=0

Wy multiply elements

-54r+1=0

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

-54r=-1

r=-1/-54

r=1/54

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