-12=5n-7n

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Solution for -12=5n-7n equation: 



-12=5n-7n

We move all terms to the left:

-12-(5n-7n)=0

We add all the numbers together, and all the variables

-(-2n)-12=0

We get rid of parentheses

2n-12=0

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

2n=12

n=12/2

n=6

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