Выполните деление: 16/21:20/49 17/30: 34/ 75 15/28:40/49

Question

Выполните деление:
16/21:20/49
17/30: 34/ 75
15/28:40/49

Answer 1

16/21:20/49=16/21x49/20=4/3x7/5=28/15=1 13/15
17/30:34/75=17/30x75/34=1/2x5/2=5/4=1 1/4
15/28:40/49=15/28x49/40=3/4x7/8=21/32