-12.78=-2.1n-2.16n

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Solution for -12.78=-2.1n-2.16n equation: 



-12.78=-2.1n-2.16n

We move all terms to the left:

-12.78-(-2.1n-2.16n)=0

We add all the numbers together, and all the variables

-(-4.26n)-12.78=0

We get rid of parentheses

4.26n-12.78=0

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

4.26n=12.78

n=12.78/4.26

n=3

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