\[1)\ \frac{3}{x + 3} - \frac{2}{x - 3} = \frac{4}{x^{2} - 9}\]
\[3(x - 3) - 2(x + 3) = 4\]
\[3x - 9 - 2x - 6 = 4\]
\[x - 15 = 4\]
\[x = 19.\]
\[Ответ:\ \ 19.\]
\[2)\ \frac{5}{x - 2} + \frac{2}{x - 4} = \frac{11}{x^{2} - 6x + 8}\]
\[5(x - 4) + 2(x - 2) = 11\]
\[5x - 20 + 2x - 4 = 11\]
\[7x - 24 = 11\]
\[7x = 35\]
\[x = 5.\]
\[Ответ:\ \ 5.\]