12n-5n-3=81

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Solution for 12n-5n-3=81 equation: 



12n-5n-3=81

We move all terms to the left:

12n-5n-3-(81)=0

We add all the numbers together, and all the variables

7n-84=0

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

7n=84

n=84/7

n=12

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