4) Вычислить: 1) 5 4/15 + 13; 2) 13/24 + 11 3/24; 3) 5/9 + 1/9; 4) 7 + 21 15/16; 5) 7 3/19 + 16/19; 6) 6 − 3/19; 7) 18 − 5 19/100; 8) 1 − 10/23; 9) 5/14 − 1/14; 10) 5 − 7/9.

1. \(5\dfrac{4}{15}+13=18\dfrac{4}{15}\).
2. \(\dfrac{13}{24}+11\dfrac{3}{24}=11\dfrac{16}{24}=11\dfrac{2}{3}\).
3. \(\dfrac{5}{9}+\dfrac{1}{9}=\dfrac{6}{9}=\dfrac{2}{3}\).
4. \(7+21\dfrac{15}{16}=28\dfrac{15}{16}\).
5. \(7\dfrac{3}{19}+\dfrac{16}{19}=7\dfrac{19}{19}=8\).
6. \(6-\dfrac{3}{19}=5\dfrac{16}{19}\).
7. \(18-5\dfrac{19}{100}=12\dfrac{81}{100}\).
8. \(1-\dfrac{10}{23}=\dfrac{13}{23}\).
9. \(\dfrac{5}{14}-\dfrac{1}{14}=\dfrac{4}{14}=\dfrac{2}{7}\).
10. \(5-\dfrac{7}{9}=4\dfrac{2}{9}\).

Ответ: 1) \(18\dfrac{4}{15}\); 2) \(11\dfrac{2}{3}\); 3) \(\dfrac{2}{3}\); 4) \(28\dfrac{15}{16}\); 5) \(8\); 6) \(5\dfrac{16}{19}\); 7) \(12\dfrac{81}{100}\); 8) \(\dfrac{13}{23}\); 9) \(\dfrac{2}{7}\); 10) \(4\dfrac{2}{9}\).