Замените отношение дробных чисел отношением натуральных чисел: 1) 1 : 4/7 2) 1/6 : 3/4...

1)
$1 \div \frac{4}{7} = 1 \times \frac{7}{4} = \frac{7}{4} = 7 \div 4$
2)
$\frac{1}{6} \div \frac{3}{4} = \frac{1}{6} \times \frac{4}{3} = \frac{4}{18} = \frac{2}{9} = 2 \div 9$
3)
$0.6 \div 0.04 = \frac{6}{10} \div \frac{4}{100} = \frac{6}{10} \times \frac{100}{4} = \frac{30}{2} = 30 \div 2$
4)
$1 \frac{1}{8} \div 2 \frac{1}{12} = \frac{9}{8} \div \frac{25}{12} = \frac{9}{8} \times \frac{12}{25} = \frac{108}{200} = \\ = \frac{54}{100} = \frac{27}{50} = 27 \div 50$