Answer
$\frac{3x-1}{3}$
Work Step by Step
$\frac{3x^{1/3}-x^{-2/3}}{3x^{-2/3}}=\frac{3x^{1/3}x^{2/3}-x^{-2/3}x^{2/3}}{3x^{-2/3}x^{2/3}}=\frac{3x-1}{3}$
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