84=12-n

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Solution for 84=12-n equation: 



84=12-n

We move all terms to the left:

84-(12-n)=0

We add all the numbers together, and all the variables

-(-1n+12)+84=0

We get rid of parentheses

1n-12+84=0

We add all the numbers together, and all the variables

n+72=0

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

n=-72

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