Question

Bài 1: Tính

( \(\dfrac{3}{2}\) - \(\dfrac{2}{5}\) + \(\dfrac{1}{10}\) ) : ( \(\dfrac{3}{2}\) - \(\dfrac{2}{3}\) + \(\dfrac{1}{12}\) )

Answer 1

`(3/2 - 2/5 + 1/10) : (3/2 - 2/3 + 1/12)`

`= (15/10 - 4/10 + 1/10) : (18/12 - 8/12 + 1/12)`

`= (15 - 4 + 1)/10 : (18 - 8 + 1)/12`

`= 12/10 : 11/12`

`= 12/10 . 12/11`

`= 72/55`

Answer 2

`(3/2 - 2/5 + 1/10) : (3/2 - 2/3 + 1/12)`

`= (15/10 - 4/10 + 1/10) : (18/12 - 8/12 + 1/12)`

`= (15 - 4 + 1)/10 : (18 - 8 + 1)/12`

`= 12/10 : 11/12`

`= 12/10 . 12/11`

`= 72/55`

Answer 3

`(3/2 - 2/5 + 1/10 ) : ( 3/2 - 2/3 + 1/12 )`
`= ( 15/10 - 4/10 + 1/10 ) : ( 18/12 - 8/12 + 1/12 )`
`= 6/5 : 11/12`
`= 6/5 . 12/11`
`= 72/55`