Bloque 6

a)\( \left[-\frac{1}{3}-\frac{2}{3}\right]\cdot\left[-\frac{5}{6}-\frac{1}{6}\right]= \)

b)\( \left[-\frac{17}{7}-\frac{3}{7}\right]\div\left[-\frac{9}{6}-\frac{3}{11}\right]= \)

c)\( \left[-\frac{18}{7}+\frac{5}{7}\right]+\left[-\frac{9}{4}-\frac{9}{4}\right]= \)

d)\( \left[-\frac{8}{9}+\frac{2}{9}\right]-\left[-\frac{1}{3}+\frac{4}{5}\right]= \)

e)\( \left[-\frac{3}{13}+\frac{7}{13}\right]-\left[-\frac{1}{15}+\frac{7}{15}\right]= \)

f)\( \left[-\frac{8}{3}+\frac{3}{8}\right]-\left[-\frac{9}{7}+\frac{1}{5}\right]= \)

g)\( \left[-\frac{9}{4}\cdot\frac{9}{4}\right]\div\left[\frac{3}{6}\cdot\frac{3}{6}\right]= \)

h)\( \left[-\frac{3}{6}+\frac{2}{13}\right]\div\left[-\frac{9}{5}+\frac{1}{3}\right]= \)

i)\( \left[-\frac{1}{7}+\frac{8}{9}\right]\div\left[-\frac{3}{4}+\frac{3}{4}\right]= \)

j)\( \left[-\frac{9}{5}\div\frac{9}{5}\right]\div\left[\frac{4}{5}-\frac{5}{5}\right]= \)