21=n/15

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Solution for 21=n/15 equation: 



21=n/15

We move all terms to the left:

21-(n/15)=0

We add all the numbers together, and all the variables

-(+n/15)+21=0

We get rid of parentheses

-n/15+21=0

We multiply all the terms by the denominator


-n+21*15=0

We add all the numbers together, and all the variables

-1n+315=0

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

-n=-315

n=-315/-1

n=+315

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