Subtracting Fractions by Boxed Rockets

\frac{2}{3} - \frac{1}{3}

\frac{1}{3}

\frac{5}{6} - \frac{3}{6}

\frac{2}{6} = \frac{1}{3}

\frac{4}{5} - \frac{2}{5}

\frac{2}{5}

\frac{4}{5} - \frac{6}{8}

\frac{2}{40} = \frac{1}{20}

\frac{1}{8} - \frac{1}{10}

\frac{1}{40}

\frac{16}{20} - \frac{8}{15}

\frac{16}{60} = \frac{4}{15}