4n+7-12-9n=75

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Solution for 4n+7-12-9n=75 equation: 



4n+7-12-9n=75

We move all terms to the left:

4n+7-12-9n-(75)=0

We add all the numbers together, and all the variables

-5n-80=0

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

-5n=80

n=80/-5

n=-16

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