2)21/360=(7*3)/(3*120)=7/120
35/700=35/(35*20)=1/20
54/900=(6*9)/(9*100)=6/100=(2*3)/(2*50)=3/50
24/600=24/(24*25)=1/25
48/800=(6*8)/(8*100)=6/100=3/50
75/1000=(5*15)/(5*200)=15/200=3/40
2)21/360=(7*3)/(3*120)=7/120
35/700=35/(35*20)=1/20
54/900=(6*9)/(9*100)=6/100=(2*3)/(2*50)=3/50
24/600=24/(24*25)=1/25
48/800=(6*8)/(8*100)=6/100=3/50
75/1000=(5*15)/(5*200)=15/200=3/40