Answer:
[tex]{ \rm{(8 \frac{1}{5} + 4 \frac{1}{5}) - (6 \frac{6}{8} - 6 \frac{2}{4}) }} \\ \\ = { \rm{( \frac{41}{5} + \frac{21}{5} ) - ( \frac{27}{4} - \frac{13}{2}) }} \\ \\ = { \rm{ \frac{62}{5} - \frac{1}{4} }} \\ \\ = { \rm{ \frac{243}{20} }} \\ \\ { \boxed{ \rm{ \: = 12 \frac{3}{20} \: \: }}}[/tex]
