Solve the following fraction problems: 2) \(\frac{44}{54} - \frac{40}{54}\) 3) \(\frac{59}{63} - \frac{19}{63}\) 4) \(\frac{18}{23} - \frac{1}{23}\) 5) \(\frac{21}{77} + \frac{12}{77}\) 6) \(\frac{86}{87} - \frac{85}{87}\) 7) \(\frac{43}{99} + \frac{42}{99}\) 8) \(\frac{64}{29} + \frac{18}{29}\) 9) \(\frac{12}{42} - \frac{3}{42}\)

Решение:

1. \(\frac{44}{54} - \frac{40}{54} = \frac{44 - 40}{54} = \frac{4}{54}\)
2. \(\frac{59}{63} - \frac{19}{63} = \frac{59 - 19}{63} = \frac{40}{63}\)
3. \(\frac{18}{23} - \frac{1}{23} = \frac{18 - 1}{23} = \frac{17}{23}\)
4. \(\frac{21}{77} + \frac{12}{77} = \frac{21 + 12}{77} = \frac{33}{77}\)
5. \(\frac{86}{87} - \frac{85}{87} = \frac{86 - 85}{87} = \frac{1}{87}\)
6. \(\frac{43}{99} + \frac{42}{99} = \frac{43 + 42}{99} = \frac{85}{99}\)
7. \(\frac{64}{29} + \frac{18}{29} = \frac{64 + 18}{29} = \frac{82}{29}\)
8. \(\frac{12}{42} - \frac{3}{42} = \frac{12 - 3}{42} = \frac{9}{42}\)

Ответ: \(\frac{4}{54}\), \(\frac{40}{63}\), \(\frac{17}{23}\), \(\frac{33}{77}\), \(\frac{1}{87}\), \(\frac{85}{99}\), \(\frac{82}{29}\), \(\frac{9}{42}\).