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n+2n+3n+4n+5n+6n+8n=88
We move all terms to the left:
n+2n+3n+4n+5n+6n+8n-(88)=0
We add all the numbers together, and all the variables
29n-88=0
We move all terms containing n to the left, all other terms to the right
29n=88
n=88/29
n=3+1/29
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