1+-18+7n=-9

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Solution for 1+-18+7n=-9 equation: 



1+-18+7n=-9

We move all terms to the left:

1+-18+7n-(-9)=0

We add all the numbers together, and all the variables

7n-8=0

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

7n=8

n=8/7

n=1+1/7

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