10. Выполните действие: 1) \(\frac{17}{33}+\frac{5}{33}\); 2) \(\frac{19}{27}-\frac{12}{27}\); 3) \(\frac{10}{16}-\frac{7}{16}+\frac{9}{16}\); 4) \(\frac{37}{45}+\frac{12}{45}-\frac{4}{45}\).

1. \(\frac{17}{33}+\frac{5}{33}=\frac{22}{33}=\frac23\).
2. \(\frac{19}{27}-\frac{12}{27}=\frac{7}{27}\).
3. \(\frac{10}{16}-\frac{7}{16}+\frac{9}{16}=\frac{10-7+9}{16}=\frac{12}{16}=\frac34\).
4. \(\frac{37}{45}+\frac{12}{45}-\frac{4}{45}=\frac{37+12-4}{45}=\frac{45}{45}=1\).

Ответ: 1) \(\frac23\); 2) \(\frac7{27}\); 3) \(\frac34\); 4) \(1\).