Đề bài

Tính

a) $- 0,375 + \dfrac{1}{4} - \left( { - \dfrac{1}{5}} \right)$

b) $\dfrac{2}{3} + \left( {\dfrac{{ - 5}}{{12}}} \right) + \left( {\dfrac{{ - 7}}{{15}}} \right) + ( - 0,2)$

c) $0,275 + \left( {\dfrac{{ - 8}}{{17}}} \right) + \dfrac{{29}}{{40}} + \left( {\dfrac{{ - 9}}{{17}}} \right) - 1\dfrac{1}{3}$

d) $\left( { - 5} \right).\left( {\dfrac{{ - 34}}{{21}}} \right).\left( {\dfrac{{ - 7}}{{10}}} \right).\left( { - \dfrac{3}{{17}}} \right)$

e) $\left( {\dfrac{{13}}{{18}}:\dfrac{{26}}{9}} \right).\dfrac{4}{7}$

f) $\left[ {\left( { - \dfrac{5}{{33}}} \right):\dfrac{2}{{11}}} \right].0,15$