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3^2x/3=128
We move all terms to the left:
3^2x/3-(128)=0
We multiply all the terms by the denominator
3^2x-128*3=0
We add all the numbers together, and all the variables
3^2x-384=0
We move all terms containing x to the left, all other terms to the right
3^2x=384
x=384/1
x=384
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