3n-21=20

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Solution for 3n-21=20 equation: 



3n-21=20

We move all terms to the left:

3n-21-(20)=0

We add all the numbers together, and all the variables

3n-41=0

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

3n=41

n=41/3

n=13+2/3

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