约分.15/5100/9014/1256/1821/1472/844/114又6分之4102/5172/168/427/9注：分母在左,分子在右.限2分钟之内回答!

Question

约分.
15/5 100/90 14/12 56/18 21/14 72/8 44/11 4又6分之4
102/51 72/16 8/4 27/9 注：分母在左,分子在右.
限2分钟之内回答!

Answer 1

15/5=3/1 100/90=10/9 14/12=7/6 56/18=28/9 21/14=3/2 72/8=9/1 44/11=4/1 4又6分之4=3/14 102/51=2/1 72/16=9/2 8/4=2/1 27/9=3/1