6/3=21/n

Solution for 6/3=21/n equation:

6/3=21/n

We move all terms to the left:

6/3-(21/n)=0


Domain of the equation: n)!=0

n!=0/1

n!=0

n∈R


We add all the numbers together, and all the variables

-(+21/n)+6/3=0

We add all the numbers together, and all the variables

-(+21/n)+2=0

We get rid of parentheses

-21/n+2=0

We multiply all the terms by the denominator


2*n-21=0

We add all the numbers together, and all the variables

2n-21=0

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

2n=21

n=21/2

n=10+1/2