Решение:
а) 5 \frac{11}{17} = \frac{5 * 17 + 11}{17} = \frac{85 + 11}{17} = \frac{96}{17}
б) 305 \frac{13}{16} = \frac{305 * 16 + 13}{16} = \frac{4880 + 13}{16} = \frac{4893}{16}
в) 6 \frac{16}{17} = \frac{6 * 17 + 16}{17} = \frac{102 + 16}{17} = \frac{118}{17}
г) 602 \frac{7}{12} = \frac{602 * 12 + 7}{12} = \frac{7224 + 7}{12} = \frac{7231}{12}