7 ( целых)1/2:4 (целых)1/2=x:3/25

Question

7 ( целых)1/2:4 (целых)1/2=x:3/25

Answer 1

15/2:9/2=х:3/25
9/2х=3/25*15/2
9/2х=9/10
х=9/10:9/2
х=9/10*2/9
х=1/5