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8(12-n)=128
We move all terms to the left:
8(12-n)-(128)=0
We add all the numbers together, and all the variables
8(-1n+12)-128=0
We multiply parentheses
-8n+96-128=0
We add all the numbers together, and all the variables
-8n-32=0
We move all terms containing n to the left, all other terms to the right
-8n=32
n=32/-8
n=-4
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