Решение:
\( \frac{5}{4} = \frac{5 \times 6}{4 \times 6} = \frac{30}{24} \)
\( \frac{8}{3} = \frac{8 \times 8}{3 \times 8} = \frac{64}{24} \)
\( \frac{11}{8} = \frac{11 \times 3}{8 \times 3} = \frac{33}{24} \)
\( \frac{30}{24} + \frac{64}{24} + \frac{33}{24} = \frac{30 + 64 + 33}{24} = \frac{127}{24} \)
Ответ: 127/24