Question

[Trần Thu Thảo]

Giúp mình với 3/7×5/4-5/4×5/14

3/7×5/4-5/4×5/14

3/7×5/4-5/4×5/14

Answer 1

[Nguyễn Thị Thương Hoài]

   \(\dfrac{3}{7}\times\)\(\dfrac{5}{4}\)  - \(\dfrac{5}{4}\) x \(\dfrac{5}{14}\)

= \(\dfrac{5}{4}\) x (\(\dfrac{3}{7}\) - \(\dfrac{5}{14}\))

= \(\dfrac{5}{4}\) x \(\dfrac{1}{14}\)

= \(\dfrac{5}{56}\)