1-7n+8=-12

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Solution for 1-7n+8=-12 equation: 



1-7n+8=-12

We move all terms to the left:

1-7n+8-(-12)=0

We add all the numbers together, and all the variables

-7n+21=0

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

-7n=-21

n=-21/-7

n=+3

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