9:2 1/4: 3 1/3 4 1/6: 5 :1/3 7 2/6:2 1/5:4/5 bantu

9:9/4:10/3=9×4/9×3/10=12/10= 1 2/10= 1 1/5
25/6:16/3=25/6 × 3/16=25/32
12×5/21×5/4=75/21=3 12/21= 3 4/7