6n-(-3)=21

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Solution for 6n-(-3)=21 equation: 



6n-(-3)=21

We move all terms to the left:

6n-(-3)-(21)=0

determiningTheFunctionDomain
6n-21-(-3)=0

We add all the numbers together, and all the variables

6n-18=0

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

6n=18

n=18/6

n=3

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