2. Найди разность дробей. 1) 5/6 − 1/4; 2) 7/8 − 3/10; 3) 11/12 − 1/6; 4) 5/9 − 2/15; 5) 7/10 − 1/5; 6) 13/18 − 5/12; 7) 9/14 − 1/7; 8) 3/4 − 5/16; 9) 17/20 − 3/8; 10) 5/6 − 7/24; 11) 1 − 3/5; 12) 2 − 7/12.

Приводим дроби к общему знаменателю, вычитаем числители и сокращаем результат.

1. \(\frac{5}{6}-\frac{1}{4}=\frac{10}{12}-\frac{3}{12}=\frac{7}{12}\).
2. \(\frac{7}{8}-\frac{3}{10}=\frac{35}{40}-\frac{12}{40}=\frac{23}{40}\).
3. \(\frac{11}{12}-\frac{1}{6}=\frac{11}{12}-\frac{2}{12}=\frac{9}{12}=\frac{3}{4}\).
4. \(\frac{5}{9}-\frac{2}{15}=\frac{25}{45}-\frac{6}{45}=\frac{19}{45}\).
5. \(\frac{7}{10}-\frac{1}{5}=\frac{7}{10}-\frac{2}{10}=\frac{5}{10}=\frac{1}{2}\).
6. \(\frac{13}{18}-\frac{5}{12}=\frac{26}{36}-\frac{15}{36}=\frac{11}{36}\).
7. \(\frac{9}{14}-\frac{1}{7}=\frac{9}{14}-\frac{2}{14}=\frac{7}{14}=\frac{1}{2}\).
8. \(\frac{3}{4}-\frac{5}{16}=\frac{12}{16}-\frac{5}{16}=\frac{7}{16}\).
9. \(\frac{17}{20}-\frac{3}{8}=\frac{34}{40}-\frac{15}{40}=\frac{19}{40}\).
10. \(\frac{5}{6}-\frac{7}{24}=\frac{20}{24}-\frac{7}{24}=\frac{13}{24}\).
11. \(1-\frac{3}{5}=\frac{5}{5}-\frac{3}{5}=\frac{2}{5}\).
12. \(2-\frac{7}{12}=\frac{24}{12}-\frac{7}{12}=\frac{17}{12}=1\frac{5}{12}\).