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4(2n-3)=-84
We move all terms to the left:
4(2n-3)-(-84)=0
We add all the numbers together, and all the variables
4(2n-3)+84=0
We multiply parentheses
8n-12+84=0
We add all the numbers together, and all the variables
8n+72=0
We move all terms containing n to the left, all other terms to the right
8n=-72
n=-72/8
n=-9
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