-21=7/8n

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Solution for -21=7/8n equation: 



-21=7/8n

We move all terms to the left:

-21-(7/8n)=0



Domain of the equation: 8n)!=0

n!=0/1

n!=0

n∈R



We add all the numbers together, and all the variables

-(+7/8n)-21=0

We get rid of parentheses

-7/8n-21=0

We multiply all the terms by the denominator


-21*8n-7=0

Wy multiply elements

-168n-7=0

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

-168n=7

n=7/-168

n=-1/24

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