1/2×2/3= 6/7×5/8= 9/10×10/11= 13/15×15/17= 14/15×5/42= 13/15×45/26= 15/28×7/30= 35/51×17/15=
1) 2/6 2) 30/56 3) 99/110 4) 195/255 5) 70/630 6) 585/390 7) 105/840 8) 595/765
1/3*2/3=2/6 6/7*5/8=30/56 9/10*10/11=90/110 13/15*15/17=195/255 14/15*5/42=70/630 13/15*45/26=585/390 15/28*7/30=105/840 35/51*17/15=595/765