Выполни деление: -7 4/5:(-1 11/15).

\[- 7\frac{4}{5}\ :\left( - 1\frac{11}{15} \right) = 7\frac{4}{5}\ :1\frac{11}{15} = \frac{39}{5}\ :\frac{26}{15} =\]

\[= \frac{39}{5} \cdot \frac{15}{26} = \frac{3 \cdot 13 \cdot 5 \cdot 3}{5 \cdot 13 \cdot 2} = \frac{9}{2} = 4,5\]