5. Выполнить вычитание:

Решение:

1. \( 10 - 4 \frac{3}{7} = 9 \frac{7}{7} - 4 \frac{3}{7} = (9-4) + (\frac{7}{7} - \frac{3}{7}) = 5 \frac{4}{7} \)
2. \( 21 - 20 \frac{13}{17} = 20 \frac{17}{17} - 20 \frac{13}{17} = (20-20) + (\frac{17}{17} - \frac{13}{17}) = \frac{4}{17} \)
3. \( 3 \frac{1}{8} - 2 = (3-2) + \frac{1}{8} = 1 \frac{1}{8} \)
4. \( 5 \frac{3}{8} - 4 = (5-4) + \frac{3}{8} = 1 \frac{3}{8} \)
5. \( 10 \frac{3}{8} - 8 \frac{11}{12} = 10 \frac{3 \cdot 3}{8 \cdot 3} - 8 \frac{11 \cdot 2}{12 \cdot 2} = 10 \frac{9}{24} - 8 \frac{22}{24} = 9 \frac{24+9}{24} - 8 \frac{22}{24} = 9 \frac{33}{24} - 8 \frac{22}{24} = (9-8) + (\frac{33}{24} - \frac{22}{24}) = 1 \frac{11}{24} \)
6. \( 5 \frac{7}{10} - \frac{24}{25} = 5 \frac{7 \cdot 5}{10 \cdot 5} - \frac{24 \cdot 2}{25 \cdot 2} = 5 \frac{35}{50} - \frac{48}{50} = 4 \frac{50+35}{50} - \frac{48}{50} = 4 \frac{85}{50} - \frac{48}{50} = 4 \frac{37}{50} \)

Ответ: 5-а) \( 5 \frac{4}{7} \), 5-б) \( \frac{4}{17} \), 5-в) \( 1 \frac{1}{8} \), 5-г) \( 1 \frac{3}{8} \), 5-д) \( 1 \frac{11}{24} \), 5-е) \( 4 \frac{37}{50} \).