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1+8(8n-1)=-455
We move all terms to the left:
1+8(8n-1)-(-455)=0
We add all the numbers together, and all the variables
8(8n-1)+456=0
We multiply parentheses
64n-8+456=0
We add all the numbers together, and all the variables
64n+448=0
We move all terms containing n to the left, all other terms to the right
64n=-448
n=-448/64
n=-7
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