Write with Rational (Fractional) Exponents seventh root of x/3

$\sqrt[7]{\frac{x}{3}}$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[7]{\frac{x}{3}}$ as ${(\frac{x}{3})}^{\frac{1}{7}}$ .

${(\frac{x}{3})}^{\frac{1}{7}}$