72/12=78/n

Solution for 72/12=78/n equation:

72/12=78/n

We move all terms to the left:

72/12-(78/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

-(+78/n)+72/12=0

We add all the numbers together, and all the variables

-(+78/n)+6=0

We get rid of parentheses

-78/n+6=0

We multiply all the terms by the denominator


6*n-78=0

We add all the numbers together, and all the variables

6n-78=0

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

6n=78

n=78/6

n=13