-42/14=21/n

Solution for -42/14=21/n equation:

-42/14=21/n

We move all terms to the left:

-42/14-(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)-42/14=0

We add all the numbers together, and all the variables

-(+21/n)-3=0

We get rid of parentheses

-21/n-3=0

We multiply all the terms by the denominator


-3*n-21=0

We add all the numbers together, and all the variables

-3n-21=0

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

-3n=21

n=21/-3

n=-7