-n-2=21

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Solution for -n-2=21 equation: 



-n-2=21

We move all terms to the left:

-n-2-(21)=0

We add all the numbers together, and all the variables

-1n-23=0

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

-n=23

n=23/-1

n=-23

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