-n-2n=-12

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Solution for -n-2n=-12 equation:



-n-2n=-12
We move all terms to the left:
-n-2n-(-12)=0
We add all the numbers together, and all the variables
-3n+12=0
We move all terms containing n to the left, all other terms to the right
-3n=-12
n=-12/-3
n=+4

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