-3=1-n-n

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Solution for -3=1-n-n equation: 



-3=1-n-n

We move all terms to the left:

-3-(1-n-n)=0

We add all the numbers together, and all the variables

-(-2n+1)-3=0

We get rid of parentheses

2n-1-3=0

We add all the numbers together, and all the variables

2n-4=0

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

2n=4

n=4/2

n=2

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