9-7n=72

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Solution for 9-7n=72 equation: 



9-7n=72

We move all terms to the left:

9-7n-(72)=0

We add all the numbers together, and all the variables

-7n-63=0

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

-7n=63

n=63/-7

n=-9

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