Step 1 :\(\sqrt[3]{\frac{a^{5}}{a^{6}}} = a^{\frac{5}{3} - 2}\)
Step 2 :\(a^{\frac{5}{3} - 2} = a^{\frac{5-6}{3}}\)
Step 3 :\(a^{\frac{-1}{3}}\)