Question

[khoa]

1/2+1/2+1/3+1/3

Answer 1

[Ngô Hải Nam]

`1/2+1/2+1/3+1/3`

`=(1/2+1/2)+(1/3+1/3)`

`=2/2+2/3`

`=1+2/3`

`=3/3+2/3`

`=5/3`

Answer 2

[boi đz]

\(\dfrac{1}{2}+\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{3}=\dfrac{1}{2}\times2+\dfrac{1}{3}\times2=\left(\dfrac{1}{2}+\dfrac{1}{3}\right)\times2=\dfrac{5}{6}\times2=\dfrac{5}{3}\)