15+12n=57

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Solution for 15+12n=57 equation: 



15+12n=57

We move all terms to the left:

15+12n-(57)=0

We add all the numbers together, and all the variables

12n-42=0

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

12n=42

n=42/12

n=3+1/2

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