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-4(n+-1)=-12
We move all terms to the left:
-4(n+-1)-(-12)=0
We add all the numbers together, and all the variables
-4(n-1)-(-12)=0
We add all the numbers together, and all the variables
-4(n-1)+12=0
We multiply parentheses
-4n+4+12=0
We add all the numbers together, and all the variables
-4n+16=0
We move all terms containing n to the left, all other terms to the right
-4n=-16
n=-16/-4
n=+4
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