Answer:
[tex]\large\boxed{\dfrac{1}{a^{-\frac{5}{6}}}=a^\frac{5}{6}}[/tex]
Step-by-step explanation:
[tex]a^{-n}=\dfrac{1}{a^n}\\\\-------------------\\\\\dfrac{1}{a^{-\frac{5}{6}}}=\dfrac{1}{\frac{1}{a^{\frac{5}{6}}}}=a^\frac{5}{6}[/tex]