9n-51=21

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Solution for 9n-51=21 equation: 



9n-51=21

We move all terms to the left:

9n-51-(21)=0

We add all the numbers together, and all the variables

9n-72=0

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

9n=72

n=72/9

n=8

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