1-3n-7n=-9

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Solution for 1-3n-7n=-9 equation: 



1-3n-7n=-9

We move all terms to the left:

1-3n-7n-(-9)=0

We add all the numbers together, and all the variables

-10n+10=0

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

-10n=-10

n=-10/-10

n=1

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