\frac{1}{2}

\frac{2}{4}

\frac{3}{6}

\frac{4}{8}

\frac{6}{12}

\frac{12}{24}

$\frac{1}{3}$ = $\frac{2}{6}$ = $\frac{4}{12}$ = $\frac{8}{24}$

$\frac{3}{4}$ = $\frac{6}{8}$ = $\frac{9}{12}$ = $\frac{18}{24}$ Rule, for example, multiply top and bottom of fraction by the sameamount