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1 1/2 * 2/3= 3/2*2/3= 1/1=1
3 1/5* 2 1/4 =9/5*9/4= 81/20=4 1/20
1/9 * 9 1/2=1/9*19/2=19/18=1 1/18
3/7 : 7/3=3/7*3/7=9/49
4 1/5 : 7/10=21/5*10/7=3/1*2/1=6/1
1/2 : 1 1/4=1/2 : 5/4= 1/2*4/5=1/1*2/5=2/5
1 1/8 : 8=9/8*1/8=9/64
4/8 : 1/2=4/8*2/1=4/4*1/1=4/4=1
3 3/11 : 3=36/11:3/1=36/11*1/3=12/11*1/1=12/11=1 1/11
2 3/7 : 4 6/7=17/7:34/7=17/7*7/34=17/1*1/34=17/34