Respuesta:
[tex] \frac{4}{5} - \frac{1}{2} = \frac{8}{10} - \frac{5}{10} = \frac{3}{10} [/tex]
[tex] \frac{5}{6} - \frac{1}{2} = \frac{10}{12} - \frac{6}{12} = \frac{4}{12} = \frac{1}{3} [/tex]
[tex] \frac{3}{5} - \frac{1}{2} = \frac{6}{10} - \frac{5}{10} = \frac{1}{10} [/tex]
