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(-3)^x=1/729
We move all terms to the left:
(-3)^x-(1/729)=0
We add all the numbers together, and all the variables
(-3)^x-(+1/729)=0
We get rid of parentheses
(-3)^x-1/729=0
We multiply all the terms by the denominator
((-3)^x)*729-1=0
We move all terms containing x to the left, all other terms to the right
((-3)^x)*729=1
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