$\begin{array}{l}
B = \left[ {1;3} \right) \cup \left( { - \infty ;6} \right) \cup \left( {2; + \infty } \right)\\
\Rightarrow B = \left( { - \infty ; + \infty } \right) \to A\\
22)\\
E = \left( {4; + \infty } \right)\backslash \left( { - \infty ;2} \right]\\
\Rightarrow \left( {4 + \infty } \right) \cap \left( { - \infty ;2} \right] = \emptyset \\
\Rightarrow E = \left( {4; + \infty } \right)\backslash \left( { - \infty ;2} \right] = \left( {4; + \infty } \right) \to D\\
23)A = \left( { - 4;4} \right] \cup \left[ {7;9} \right] \cup \left[ {1;7} \right)\\
\Rightarrow A = \left( { - 4;9} \right]
\end{array}$
