5/6:7/12,3:1/2,1:2/7,1:1/4 помогите

Question

5/6:7/12,3:1/2,1:2/7,1:1/4 помогите

Answer 1

5/6:7/12=5/6*12/7=(5*2)/7=10/7=1 3/7
3:1/2=3/1*2/1=6
1:2/7=1*7/2=7/2=3 1/2
1:1/4=1*4/1=4
теперь понятен принцип?