a)$\frac{11}{5}$ : $\frac{33}{-65}$
=$-\frac{13}{3}$
b)$\frac{6}{12}$ - $\frac{27}{7}.$ $\frac{1}{18}$
=$\frac{6}{12}$ - $\frac{3}{14}$
=$\frac{2}{7}$
c)$-\frac{4}{5}:$ ($\frac{5}{8}$ - $\frac{7}{4}$)
=$-\frac{4}{5}:$ $-\frac{9}{8}$
=$\frac{32}{45}$
d)$\frac{9}{14}.$ $\frac{21}{6}$ $-\frac{15}{6}$
=$\frac{9}{4}$ $-\frac{15}{6}$
=$-\frac{1}{4}$
e)$\frac{2}{3}$ . ($\frac{5}{8}$ + $\frac{39}{12}$)
=$\frac{2}{3}$ . $\frac{31}{8}$
=$\frac{31}{12}$
$chucbanhoktot$
$chomikxinctlhnnha$