Reconnaître des quotients égaux

\frac{1}{2}

\frac{2}{4}

\frac{1}{2}

\frac{2}{4}

\frac{1}{2}

\frac{1~\times~2}{2~\times~2}

\frac{2}{4}

\frac{3}{5}

\frac{3}{5}

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

\frac{\ldots}{20}

\frac{3}{5}

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

\frac{12}{20}

\frac{2}{5}

\frac{3}{4}

\frac{4}{10}

\frac{12}{60}

\frac{9}{12}

\frac{6}{15}

\frac{20}{50}

\frac{18}{45}

\frac{60}{120}

\frac{4}{10} = \frac{2 \times 2}{2 \times 5}

\frac{12}{60} = \frac{6 \times 2}{12 \times 5}

\frac{6}{15} = \frac{3 \times 2}{3 \times 5}

\frac{20}{50} = \frac{10 \times 2}{10 \times 5}

\frac{18}{45} = \frac{9 \times 2}{9 \times 5}

\frac{60}{120} = \frac{30 \times 2}{24 \times 5}

\frac{7}{4}

\frac{1}{3}

\frac{175}{100}

\frac{49}{16}

\frac{6}{35}

\frac{12}{70}

\frac{12}{35}

\frac{6}{70}

\frac{7}{4} = \frac{7 \times 25}{4 \times 25} = \frac{175}{100}

\frac{6}{35} = \frac{6 \times 2}{35 \times 2} = \frac{12}{70}