-20=-12-n

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Solution for -20=-12-n equation: 



-20=-12-n

We move all terms to the left:

-20-(-12-n)=0

We add all the numbers together, and all the variables

-(-1n-12)-20=0

We get rid of parentheses

1n+12-20=0

We add all the numbers together, and all the variables

n-8=0

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

n=8

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