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43n+2n-36n+4n-8n=35
We move all terms to the left:
43n+2n-36n+4n-8n-(35)=0
We add all the numbers together, and all the variables
5n-35=0
We move all terms containing n to the left, all other terms to the right
5n=35
n=35/5
n=7
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