Subtracting Fractions by Boxed Rockets

\frac{8}{9} - \frac{7}{9}

\frac{1}{9}

\frac{7}{8} - \frac{5}{8}

\frac{2}{8} = \frac{1}{4}

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

\frac{1}{4}

\frac{4}{6} - \frac{1}{2}

\frac{1}{6}

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

\frac{1}{6}

\frac{1}{3} - \frac{3}{10}

\frac{1}{30}