72_90 33_39 45_51 12_60 50_100 дроби

Question

72_90 33_39 45_51 12_60 50_100 дроби

Answer 1

72/90=12/15 ; 33/39 = 11/13 ; 45/51 = 15/21 ; 12/60=1/5 ; 50/100 = 1/2