Question

3,5 - ( - 2/5 ) 

Answer 1

3,5 - ( - 2/5 ) = 7/2 - ( - 2/5 ) = 7/2 + 2/5 = 35/10 + 4/10 = 39/10

Answer 2

3,5 - ($\dfrac{-2}{5}$)

= $\dfrac{7}{2}$ - ($\dfrac{-2}{5}$)

= $\dfrac{7}{2}$ + $\dfrac{2}{5}$

= $\dfrac{7.5}{2.5}$ + $\dfrac{2.2}{5.2}$

= $\dfrac{35}{10}$ + $\dfrac{4}{10}$

= $\dfrac{35+4}{10}$

= $\dfrac{39}{10}$.

Answer 3

`3,5 - (-2/5)`

`= 7/2 + 2/5`

`= 35/10 + 4/10`

`= (35 + 4)/10`

`= 39/10`