Bloque 4

a) \(\left[-\frac{1}{3}\cdot\frac{2}{5}\right]-\left[\frac{3}{5}-\frac{2}{5}\right]=\)

b) \(\left[-\frac{7}{2}+2\right]\div\left[-\frac{4}{3}+5\right]=\)

c) \(\left[\frac{7}{4}\div\frac{1}{5}\right]\cdot\left[\frac{3}{4}\div\frac{4}{3}\right]=\)

d) \(\left[-\frac{4}{3}+\frac{1}{3}\right]+\left[\frac{3}{5}-\frac{7}{20}\right]=\)

e) \(\left[\frac{1}{9}\div\frac{3}{7}\right]\div\left[\frac{2}{3}\div\frac{6}{4}\right]=\)

f) \(\left[-\frac{4}{3}+\frac{1}{9}\right]-\left[\frac{9}{5}-\frac{1}{5}\right]=\)

g) \(\left[-\frac{1}{8}-\frac{2}{7}\right]\cdot\left[-\frac{1}{3}\div\frac{3}{5}\right]=\)

h) \(\left[\frac{3}{9}+\frac{2}{7}\right]\div\left[\frac{4}{6}+\frac{3}{2}\right]=\)

i) \(\left[\frac{3}{7}-\frac{2}{8}\right]\cdot\left[\frac{9}{5}\cdot\frac{3}{5}\right]=\)

j) \(\left[-\frac{2}{4}\cdot\frac{3}{5}\right]+\left[\frac{9}{4}\div\frac{3}{7}\right]=\)