Вычислите: 4/5 ÷ 3/7; 2/3 ÷ 5/7; 3/5 ÷ 4/7; 2/3 ÷ 7/11; 6/35 ÷ 48/49; 5/18 ÷ 25/27; 6/25 ÷ 12/35; 27/28 ÷ 9/56.

При делении на дробь умножаем на обратную ей дробь.

1. \(\frac{4}{5}\div\frac{3}{7}=\frac{4}{5}\times\frac{7}{3}=\frac{28}{15}\).
2. \(\frac{2}{3}\div\frac{5}{7}=\frac{2}{3}\times\frac{7}{5}=\frac{14}{15}\).
3. \(\frac{3}{5}\div\frac{4}{7}=\frac{3}{5}\times\frac{7}{4}=\frac{21}{20}\).
4. \(\frac{2}{3}\div\frac{7}{11}=\frac{2}{3}\times\frac{11}{7}=\frac{22}{21}\).
5. \(\frac{6}{35}\div\frac{48}{49}=\frac{6}{35}\times\frac{49}{48}=\frac{7}{40}\).
6. \(\frac{5}{18}\div\frac{25}{27}=\frac{5}{18}\times\frac{27}{25}=\frac{3}{10}\).
7. \(\frac{6}{25}\div\frac{12}{35}=\frac{6}{25}\times\frac{35}{12}=\frac{7}{10}\).
8. \(\frac{27}{28}\div\frac{9}{56}=\frac{27}{28}\times\frac{56}{9}=6\).