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8(2n-4)=-128
We move all terms to the left:
8(2n-4)-(-128)=0
We add all the numbers together, and all the variables
8(2n-4)+128=0
We multiply parentheses
16n-32+128=0
We add all the numbers together, and all the variables
16n+96=0
We move all terms containing n to the left, all other terms to the right
16n=-96
n=-96/16
n=-6
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