Răspuns:
Explicație pas cu pas:
[tex] \frac{5}{9} = \frac{8}{9} - \frac{3}{9} \\ [/tex]
[tex] \frac{4}{7} = \frac{6}{7} - \frac{2}{7} \\ [/tex]
[tex] \frac{6}{10} = \frac{10}{10} - \frac{4}{10} \\ [/tex]
[tex] \frac{3}{8} = \frac{7}{8} - \frac{4}{8} \\ [/tex]
