Multiplier des fractions

\frac{5}{3}~\times~\frac{4}{7}

\frac{5~\times~4}{3~\times~7}

\frac{20}{21}

8~\times~\frac{9}{5}

\frac{8~\times~9}{1~\times~5}

\frac{72}{5}

\frac{19}{28}~\times~\frac{7}{8}

\frac{19~\times~7}{4~\times~7~\times~8}

\frac{19}{4~\times~8}

\frac{19}{32}

\frac{3}{4}~\times~\frac{4}{5}

\frac{3~\times~4}{4~\times~5}

\frac{3}{5}

\frac{75}{100}~\times~\frac{3}{4}

\frac{75~\times~3}{100~\times~4}

\frac{9}{16}

\frac{2}{3}

\frac{5}{7}

\frac{10}{21}

\frac{14 \times 15}{21}

\frac{6 \times 5}{7}

\frac{14}{3}

\frac{3}{14}

\frac{143}{314}

\frac{11}{3}

\frac{6}{14}

\frac{21}{22}

\frac{1 386}{924}

\frac{38}{39}

\frac{2}{3}

\frac{3}{2}

\frac{1 386}{924}

\frac{3}{2}