Ответ:

Ответ:

1. а) \( \frac{12}{60} = \frac{1}{5} \)

б) \( \frac{1,5}{60} = \frac{15}{600} = \frac{1}{40} \)

2. а) \( \frac{3}{7} \div 1 \frac{1}{14} = \frac{3}{7} \div \frac{15}{14} = \frac{3}{7} \times \frac{14}{15} = \frac{3 \times 14}{7 \times 15} = \frac{42}{105} = \frac{2}{5} \)

б) \( \frac{1,6}{0,8} = \frac{16}{8} = 2 \)

3. а) \( 1 \frac{1}{2} \div 4 \frac{1}{2} = \frac{3}{2} \div \frac{9}{2} = \frac{3}{2} \times \frac{2}{9} = \frac{3 \times 2}{2 \times 9} = \frac{6}{18} = \frac{1}{3} \)

б) \( \frac{1,2}{4,8} = \frac{12}{48} = \frac{1}{4} \)

4. а) \( 8 \frac{2}{3} \div 2 \frac{1}{6} = \frac{26}{3} \div \frac{13}{6} = \frac{26}{3} \times \frac{6}{13} = \frac{26 \times 6}{3 \times 13} = \frac{156}{39} = 4 \)

б) \( \frac{0,08}{8} = \frac{8}{800} = \frac{1}{100} \)