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2n+2n+2n+2n=4^n+3
We move all terms to the left:
2n+2n+2n+2n-(4^n+3)=0
We add all the numbers together, and all the variables
8n-(4^n+3)=0
We get rid of parentheses
8n-4^n-3=0
We move all terms containing n to the left, all other terms to the right
8n-4^n=3
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