1)14/15:2/3=(14*3)/(15*4)=7/5
2)2*7/5=14/5=2 4/5
(12*4*11)/(11*3*24)=2/3
(1*2*3*4)/(2*3*4*5)=1/5
№1
3/4*5/7=15/28
4/11*3/4=(4*3)/(11*4)=3/11
5/7*14/19=(5*14)/(7*19)=10/19
(3/5)²=9/25
4/5:3/7=(4*7)/(5*3)=28/25=1 3/25
15/8:5/4=(15*4)/(8*5)=3/2=1 1/2
4/9:2=2/9
6:3/5=(6*5)/3=10