№4 a) \( \frac{7}{16} + \frac{1}{2} \); 6) \( 7 - 4 \frac{5}{9} \); в) \( \frac{8}{9} - \frac{7}{12} \); г) \( 4 \frac{3}{10} + 1 \frac{5}{12} \); д) \( 9 \frac{3}{8} - 1 \frac{5}{24} + 7 \frac{2}{3} \).

Решение:

1. a) \( \frac{7}{16} + \frac{1}{2} = \frac{7}{16} + \frac{8}{16} = \frac{15}{16} \)
2. 6) \( 7 - 4 \frac{5}{9} = 6 \frac{9}{9} - 4 \frac{5}{9} = 2 \frac{4}{9} \)
3. в) \( \frac{8}{9} - \frac{7}{12} = \frac{32}{36} - \frac{21}{36} = \frac{11}{36} \)
4. г) \( 4 \frac{3}{10} + 1 \frac{5}{12} = 4 \frac{18}{60} + 1 \frac{25}{60} = 5 \frac{43}{60} \)
5. д) \( 9 \frac{3}{8} - 1 \frac{5}{24} + 7 \frac{2}{3} = 9 \frac{9}{24} - 1 \frac{5}{24} + 7 \frac{16}{24} = (9 - 1 + 7) + \frac{9 - 5 + 16}{24} = 15 + \frac{20}{24} = 15 \frac{5}{6} \)

Ответ: a) \( \frac{15}{16} \); б) \( 2 \frac{4}{9} \); в) \( \frac{11}{36} \); г) \( 5 \frac{43}{60} \); д) \( 15 \frac{5}{6} \).