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3^2^x^+^1-28(3^x^-^1)+1=0
We add all the numbers together, and all the variables
3^2^x^-28(3^x^-^1)=0
We multiply parentheses
3^2^x^-84x-=0
We add all the numbers together, and all the variables
-84x+3^2^x^=0
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