7n-9+6n=31

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Solution for 7n-9+6n=31 equation: 



7n-9+6n=31

We move all terms to the left:

7n-9+6n-(31)=0

We add all the numbers together, and all the variables

13n-40=0

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

13n=40

n=40/13

n=3+1/13

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