n+(-3)=21

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Solution for n+(-3)=21 equation: 



n+(-3)=21

We move all terms to the left:

n+(-3)-(21)=0

determiningTheFunctionDomain
n-21+(-3)=0

We add all the numbers together, and all the variables

n-24=0

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

n=24

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