Đáp án:

Giải thích các bước giải:

 Bài `10` :

A)

`1212/2323 = (1212 : 101)/(2323 : 101) = 12/23 `

`-> 12/23 = 12/23 `

`-> 1212/2323 = 12/23 `

``

B)

` 414141/676767 = (414141 : 10101)/(676767 : 10101) = 41/67 `

`-> 41/67 = 41/67 `

`-> 414141/676767 = 41/67`

``

C)

` - 5959/4242 = (- 5959 : 101)/(4242 : 101) = - 59/42 `

`-> - 59/42 = - 59/42 `

`-> - 5959/4242 = - 59/42 `

``

D)

` 1010/2121 = (1010 : 101)/(2121 : 101) = 10/21 `

` 101010/212121 = (101010 : 10101)/(212121 : 10101) = 10/21 `

`-> 10/21 = 10/21 `

`-> 1010/2121 = 101010/212121 `

``

E)

` - 333/666 = (- 333 : 333)/(666 : 333) = - 1/2 `

` (444)/(-888) = (444 : 444)/(- 888 : 888) = - 1/2 `

`-> - 1/2 =` `- 1/2 `

`-> - 333/666 = 444/(- 888) `

``

F)
` - 555/888 = (- 555 : 111)/(888 : 8) = - 5/8 `

` - 33/44 = (-33 : 11)/(44 : 11) = - 3/4 `

` - 5/8 ` và ` - 3/4 `

` - 5/8 ` và `-6/8 `

`-> - 5 >` `- 6 `

`-> - 5/8 >` `- 6/8`

`-> - 555/888 >` `- 33/44`