Question

Tính bằng cách thuận tiện 17/24 ÷ 7/4 - 5/12 ÷ 7/4 + 3/4 ÷ 7/4

Answer 1

17/24 : 7/4 - 5/12 : 7/4 + 3/4 : 7/4

= 17/24 × 4/7 - 5/12 × 4/7 + 3/4 × 4/7

= 4/7 × (17/24 - 5/12 + 3/4)

= 4/7 × 25/24

= = 25/42

Answer 2

Các bạn giúp mình nhé !