Subtracting Fractions by Boxed Rockets

\frac{5}{7} - \frac{1}{7}

\frac{4}{7}

\frac{3}{4} - \frac{2}{4}

\frac{1}{4}

\frac{7}{8} - \frac{4}{8}

\frac{3}{8}

\frac{7}{12} - \frac{7}{20}

\frac{14}{60} = \frac{7}{30}

\frac{1}{2} - \frac{2}{10}

\frac{3}{10}

\frac{3}{4} - \frac{4}{12}

\frac{5}{12}