Question

[Dương Nguyễn Hồng Nhi]

tính rồi rút gọn 

4/5 : 6/10 

9/25 : 3/5

12/35 ; 9/25

Answer 1

[Nguyễn Hoàng Giang]

tu lam nhe ko biết đâu ahii

Answer 2

[Love Yourself]

4/5:6/10= 4/5x10/6 = 40/30=4/3 9/25:3/5= 9/25x5/3 = 45/75= 3/5 12/35:9/25 = 12/35x25/9= 300/225=4/3