Question

Answer 1

\(\dfrac{2}{5}+\left(-\dfrac{4}{5}\right)+\left(-\dfrac{1}{2}\right)\\ =\dfrac{-2}{5}+\dfrac{-1}{2}\\ =\dfrac{-4}{10}+\dfrac{-5}{10}\\ =\dfrac{-9}{10}\)

Answer 2

`2/5 + (-4/5) + (-1/2)`

`=2/5 - 4/5 - 1/2`

`=(2-4)/5 - 1/2`

`= (-2/5) - 1/2`

`= -4/10 - 5/10`

`=-9/10`