Сократите дроби, используя признаки делимости: 1) 14/21, 18/24, 24/15, 25/35, 81/108; 2) 12/51, 4/26, 10/90, 35/45, 15/93; 3) 30/42, 33/39, 45/51, 36/60, 50/100; 4) 15/95, 33/48, 63/108, 34/82, 105/200.

1)

1. \(\frac{14}{21}=\frac{2}{3}\)
2. \(\frac{18}{24}=\frac{3}{4}\)
3. \(\frac{24}{15}=\frac{8}{5}\)
4. \(\frac{25}{35}=\frac{5}{7}\)
5. \(\frac{81}{108}=\frac{3}{4}\)

2)

1. \(\frac{12}{51}=\frac{4}{17}\)
2. \(\frac{4}{26}=\frac{2}{13}\)
3. \(\frac{10}{90}=\frac{1}{9}\)
4. \(\frac{35}{45}=\frac{7}{9}\)
5. \(\frac{15}{93}=\frac{5}{31}\)

3)

1. \(\frac{30}{42}=\frac{5}{7}\)
2. \(\frac{33}{39}=\frac{11}{13}\)
3. \(\frac{45}{51}=\frac{15}{17}\)
4. \(\frac{36}{60}=\frac{3}{5}\)
5. \(\frac{50}{100}=\frac{1}{2}\)

4)

1. \(\frac{15}{95}=\frac{3}{19}\)
2. \(\frac{33}{48}=\frac{11}{16}\)
3. \(\frac{63}{108}=\frac{7}{12}\)
4. \(\frac{34}{82}=\frac{17}{41}\)
5. \(\frac{105}{200}=\frac{21}{40}\)