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8^b^-1=2^4^b^+^4
We move all terms to the left:
8^b^-1-(2^4^b^+^4)=0
We get rid of parentheses
8^b^-2^4^b^-1-^4=0
We add all the numbers together, and all the variables
8^b^-2^4^b^=0
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