Решите неравенство: ((x+5)(x-3))/((x+7)(x-4))<=0.

\[\frac{(x + 5)(x - 3)}{(x + 7)(x - 4)} \leq 0\]

\[Ответ:( - 7;\ - 5\rbrack \cup \lbrack 3;4).\]