Tính hợp lí:
a) \(\left(-0,4\right)+\dfrac{3}{8}+\left(-0,6\right)\)
b) \(\dfrac{4}{5}-1,8+0,375+\dfrac{5}{8}\)
c) \(\dfrac{7}{3}.\left(-2,5\right).\dfrac{6}{7}\)
d) \(\dfrac{7}{12}.\left(-2,34\right)-\dfrac{7}{12}.\left(-0,34\right)\)
e) \(\dfrac{-8}{3}.\dfrac{2}{11}-\dfrac{8}{3}:\dfrac{11}{9}\)
Giúp với!