21=-16+n

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Solution for 21=-16+n equation: 



21=-16+n

We move all terms to the left:

21-(-16+n)=0

We add all the numbers together, and all the variables

-(n-16)+21=0

We get rid of parentheses

-n+16+21=0

We add all the numbers together, and all the variables

-1n+37=0

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

-n=-37

n=-37/-1

n=+37

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