\[Дано:\ \ 4 < x < 5\ \ \ \ и\ \ \]
\[- 2 < y < - 1.\]
\[- \left| \begin{matrix} 4 < x < 5 \\ - 1 > y > - 2 \\ \end{matrix} \right.\ \]
\[\text{\ \ \ \ \ \ \ }\overline{\ \ \ 5 < x - y < 7\ \ \ }\]