Решите пожалуйста!Срочно!Даю 20 баллов!

Решите задачу:

$\cfrac{\sqrt{\sqrt[3]{a}}*b^{\frac{5}{6}}}{a^{\frac{5}{6}}(b^{-1,2})^{\frac{5}{18}}}=\cfrac{\sqrt[6]{a}*b^{\frac{5}{6}}}{a^{\frac{5}{6}}*b^{-\frac{1}{3}}}=a^{\frac{1}{6}-\frac{5}{6}}*b^{\frac{5}{6}-(-\frac{1}{3})}=a^{-\frac{2}{3}}*b^{\frac{7}{6}}=\frac{b^{\frac{7}{6}}}{a^{\frac{2}{3}}}=(\frac{b^7}{a^4})^{\frac{1}{6}}$

$\cfrac{\sqrt[4]{\sqrt{a}}*b^{0,5}}{a^{-\frac{7}{8}}(b^{-1,6})^{\frac{5}{16}}}=\cfrac{\sqrt[8]{a}*b^{\frac{1}{2}}}{a^{-\frac{7}{8}}*b^{-\frac{1}{2}}}=a^{\frac{1}{8}-(-\frac{7}{8})}*b^{\frac{1}{2}-(-\frac{1}{2})}=ab$