Сложите дроби \(\frac{a+9}{a-5} + \frac{a-3}{5-a}\) .

• \(\frac{12}{a-5}\)
• \(\frac{2a+6}{a^2-25}\)
• \(\frac{12}{5-a}\)
• \(\frac{2a+6}{a-5}\)