`#Gửi`

`a,` `34/111 + 2/111` 

`=` `36/111`

`@` Tử nhỏ hơn mẫu`.`

`=>` `36/111 < 1`

`3/4 + 1/2`

`=` `5/4`

`@` Tử lớn hơn mẫu`.`

`=>` `5/4 > 1`

`=>` `36/111 < 5/4`

`=>` `34/111 + 2/111 < 3/4 + 1/2`

`b,` `43/250 + 40/250`

`=` `83/250`

`@` Rút gọn chia cho `10`

`=>` `(8,3)/25`

`12/25 + 1/5`

`=` `17/25 `

`=>` `(8,3)/25 < 17/25`

`=>` `83/250 < 17/25`

`=>` `43/250 + 40/250 < 12/25 + 1/5`