-9(7n-8)=639

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Solution for -9(7n-8)=639 equation: 



-9(7n-8)=639

We move all terms to the left:

-9(7n-8)-(639)=0

We multiply parentheses

-63n+72-639=0

We add all the numbers together, and all the variables

-63n-567=0

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

-63n=567

n=567/-63

n=-9

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