3n/21=9

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Solution for 3n/21=9 equation: 



3n/21=9

We move all terms to the left:

3n/21-(9)=0

We multiply all the terms by the denominator


3n-9*21=0

We add all the numbers together, and all the variables

3n-189=0

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

3n=189

n=189/3

n=63

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