Va rog muuult repede!

Explicație pas cu pas:
[tex] \frac{4}{3} = \frac{8}{3} - \frac{4}{3} [/tex]
[tex] \frac{30}{40} = \frac{60}{40} - \frac{30}{40} [/tex]
[tex] \frac{20}{9} = \frac{30}{9} - \frac{10}{9} [/tex]
[tex] \frac{8}{6} = \frac{10}{6} - \frac{2}{6} [/tex]
[tex] \frac{16}{12} = \frac{25}{12} - \frac{9}{12} [/tex]