-72=7n-9

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Solution for -72=7n-9 equation: 



-72=7n-9

We move all terms to the left:

-72-(7n-9)=0

We get rid of parentheses

-7n+9-72=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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