Представьте в виде дроби: 5/(c+3)-(5c-2)/(c^2+3c).

\[\frac{5^{\backslash c}}{c + 3} - \frac{5c - 2}{c^{2} + 3c} = \frac{5c - 5c + 2}{c(c + 3)} =\]

\[= \frac{2}{c^{2} + 3c}.\]