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2(8-n)+3(-4+4n)=-66
We move all terms to the left:
2(8-n)+3(-4+4n)-(-66)=0
We add all the numbers together, and all the variables
2(-1n+8)+3(4n-4)-(-66)=0
We add all the numbers together, and all the variables
2(-1n+8)+3(4n-4)+66=0
We multiply parentheses
-2n+12n+16-12+66=0
We add all the numbers together, and all the variables
10n+70=0
We move all terms containing n to the left, all other terms to the right
10n=-70
n=-70/10
n=-7
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