Question

Answer 1

`2/5 + 10/20 : 2/3`

` =2/5 + 1/2 : 2/3`

`=2/5 + 1/2 xx 3/2`

`= 2/5 + 3/4`

` = 8/20 + 15/20`

`= (8 + 15)/20`

` = 23/20`

 

`#BaoL i n h`

Answer 2

\(\dfrac{2}{5}+\dfrac{10}{20}:\dfrac{2}{3}\\ =\dfrac{2}{5}+\dfrac{1}{2}:\dfrac{2}{3}\\ =\dfrac{2}{5}+\dfrac{1\times3}{2\times2}\\ =\dfrac{2}{5}+\dfrac{3}{4}\\ =\dfrac{23}{20}\)