Question

Answer 1

\(=\left(\dfrac{5.5-2.7}{35}\right):\dfrac{11}{7}\\ =\dfrac{11}{35}:\dfrac{11}{7}\\ =\dfrac{11}{35}.\dfrac{7}{11}\\ =\dfrac{7}{35}=\dfrac{1}{5}\)

Answer 2

`(5/7-2/5):11/7`

`=(25/35 - 14/35):11/7`

`=11/35 : 11/7`

`=11/35 xx 7/11`

`=7/35`

`=1/5`

Answer 3

= 1/5 đẵ rút gọn

Answer 4

(5/7 - 2/5) : 11/7 = 11/25 : 11/7 = 11/25 x 7/11 = 1/5