Question

giúp với ạ

 

Answer 1

-7/5

Answer 2

 

f) (-8)+ -3/5-7/10+9+-33/30

=-8/1+3/5-7/10+9/1+-33/30

=(-8/1+9/1) -(3/5+7/10)

= 1-13/10

=10/10-13/10

=-3/10

Answer 3

Ta có:

   (- 8) + \(\dfrac{-3}{5}\) - \(\dfrac{7}{10}\) + 9 + \(\dfrac{-33}{30}\)

= (- 8) - \(\dfrac{3}{5}\) - \(\dfrac{7}{10}\) + 9 - \(\dfrac{33}{30}\)

= (- 8 + 9) - \(\left(\dfrac{3}{5}+\dfrac{7}{10}+\dfrac{33}{30}\right)\)

= 1 - \(\dfrac{12}{5}\) = - \(\dfrac{7}{5}\)= -1,4