\[\frac{2x + 24}{x^{2} - 9} + \frac{3}{x + 3} =\]
\[= \frac{2x + 24 + 3 \cdot (x - 3)}{(x - 3)(x + 3)} =\]
\[= \frac{2x + 24 + 3x - 9}{(x - 3)(x + 3)} =\]
\[= \frac{5x + 15}{(x - 3)(x + 3)} =\]
\[= \frac{5}{1997 + 3} = \frac{5}{2000} = 0,0025\]