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