10n+12-9-11n=31

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Solution for 10n+12-9-11n=31 equation: 



10n+12-9-11n=31

We move all terms to the left:

10n+12-9-11n-(31)=0

We add all the numbers together, and all the variables

-1n-28=0

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

-n=28

n=28/-1

n=-28

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