\[( - 0,76 - 0,44)\ :2\frac{2}{3} = - 1,2\ :\frac{8}{3} =\]
\[= - \frac{12}{10} \cdot \frac{3}{8} = - \frac{6}{5} \cdot \frac{3}{8} = - \frac{3 \cdot 3}{5 \cdot 4} =\]
\[= - \frac{9}{20} = - 0,45\]