Esegui la seguente espressione

$$7-\left\{\left(\frac{11}{3}-\frac{7}{6}\right)+\left[\frac{7}{8}+\left(\frac{11}{3}-2-\frac{5}{6}\right)-\left(\frac{1}{6}+\frac{2}{5}+\frac{3}{30}\right)+\frac{1}{3}\right]\right\}=$$

$$m.c.m.(3,6)=6$$ – $$m.c.m.(6;5;30)=30$$

$$7-\left\{\left(\frac{22-7}{6}\right)+\left[\frac{7}{8}+\left(\frac{22-12-5}{6}\right)-\left(\frac{5+12+3}{30}\right)+\frac{1}{3}\right]\right\}=$$

$$7-\left\{\frac{15}{6}+\left[\frac{7}{8}+\frac{5}{6}-\frac{20}{30}+\frac{1}{3}\right]\right\}=$$

$$7-\left\{\frac{5}{2}+\left[\frac{7}{8}+\frac{5}{6}-\frac{2}{3}+\frac{1}{3}\right]\right\}=$$

$$m.c.m.(8;6,3)=24$$

$$7-\left\{\frac{5}{2}+\left[\frac{21+20-16+8}{24}\right]\right\}=$$

$$7-\left\{\frac{5}{2}+\frac{33}{24}\right\}=$$

$$7-\left\{\frac{5}{2}+\frac{11}{8}\right\}=$$

$$m.c.m.(2;8)=8$$

$$7-\left\{\frac{20+11}{8}\right\}=$$

$$7-\frac{31}{8}=$$

$$\frac{56-31}{8}=$$

$$\frac{25}{8}$$