12n+3n+n-2n=18

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Solution for 12n+3n+n-2n=18 equation: 



12n+3n+n-2n=18

We move all terms to the left:

12n+3n+n-2n-(18)=0

We add all the numbers together, and all the variables

14n-18=0

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

14n=18

n=18/14

n=1+2/7

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