Question

Tính

1/2 - 1/6 - 1/9 =

Answer 1

`1/2 -1/6- 1/9`

`= 3/6 -1/6 -1/9`

`= 2/6 -1/9`

`= 1/3-1/9`

`=3/9-1/9`

`=2/9`

Answer 2

\(\dfrac{1}{2}-\dfrac{1}{6}-\dfrac{1}{9}=\dfrac{9}{18}-\dfrac{3}{18}-\dfrac{2}{18}=\dfrac{4}{18}=\dfrac{2}{9}\)

Answer 3

1/2 - 1/6 - 1/9 = 9/18 - 3/18 - 2/18= 4/18

Rút gọn còn 2/9