Subtracting Fractions by Boxed Rockets

\frac{4}{8} - \frac{3}{8}

\frac{1}{8}

\frac{3}{6} - \frac{2}{6}

\frac{1}{6}

\frac{6}{7} - \frac{3}{7}

\frac{3}{7}

\frac{3}{4} - \frac{1}{6}

\frac{7}{12}

\frac{14}{20} - \frac{1}{8}

\frac{23}{40}

\frac{1}{3} - \frac{2}{8}

\frac{2}{24} = \frac{1}{12}