[Risolto] Espressioni con frazioni

$-\frac{3}{5} + \big(\frac{4}{5} + \frac{8}{15} - \frac{1}{6}\big)^2 : \big(\frac{13}{3} - \frac{11}{4} - 1\big) + \frac{8}{3} - \frac{2}{3}·\frac{18}{5}$ =

= $-\frac{3}{5} + \big( \frac{24+16-5}{30} \big)^2 : \big( \frac{52-33-12}{12} \big) + \frac{8}{3} - \frac{2}{1}·\frac{6}{5}$ =

= $-\frac{3}{5} + \big( \frac{35}{30} \big)^2 : \frac{7}{12} + \frac{8}{3} - \frac{12}{5}$ =

= $-\frac{3}{5} + \big( \frac{7}{6} \big)^2 · \frac{12}{7} + \frac{8}{3} - \frac{12}{5}$ =

= $-\frac{3}{5} + \frac{49}{36} · \frac{12}{7} + \frac{8}{3} - \frac{12}{5}$ =

= $-\frac{3}{5} + \frac{7}{3} · \frac{1}{1} + \frac{8}{3} - \frac{12}{5}$ =

= $-\frac{3}{5} + \frac{7}{3} + \frac{8}{3} - \frac{12}{5}$ =

= $ \frac{-9+35+40-36}{15}=\frac{30}{15}=2$