4n-12=21

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Solution for 4n-12=21 equation: 



4n-12=21

We move all terms to the left:

4n-12-(21)=0

We add all the numbers together, and all the variables

4n-33=0

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

4n=33

n=33/4

n=8+1/4

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