1+9n=-80

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Solution for 1+9n=-80 equation: 



1+9n=-80

We move all terms to the left:

1+9n-(-80)=0

We add all the numbers together, and all the variables

9n+81=0

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

9n=-81

n=-81/9

n=-9

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