Multiplikasjon og divisjon med brøker

$$=\frac{{\displaystyle \stackrel{1}{\cancel{2}}}·5}{3·{\displaystyle \stackrel{2}{\cancel{4}}}}=\frac{5}{6}$$

$$=\frac{18}{15}·\frac{3}{1}=\frac{18·{\displaystyle \stackrel{1}{\cancel{3}}}}{{\displaystyle \stackrel{5}{\cancel{15}}}·1}=\frac{18}{5}$$

$$=\frac{27}{16}·\frac{24}{36}=\frac{27·24}{16·36}=\frac{\cancel{3}·\cancel{3}·3·\cancel{2}·\cancel{2}·\cancel{2}·3}{\cancel{2}·\cancel{2}·\cancel{2}·2·2·2·\cancel{3}·\cancel{3}}=\frac{9}{8}$$

$$=\frac{3}{1}·\frac{5}{18}=\frac{{\displaystyle \stackrel{1}{\cancel{3}·5}}}{{\displaystyle \stackrel{6}{\cancel{18}}}}=\frac{5}{6}$$