约分,按格式!谢谢!
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12/36=(12/12)/(36/12)=1/3,16/80=(16/16)/(80/16)=1/5,32/48=(32/16)/(48/16)=2/3
20/56=(20/4)/(56/4)=5/14,25/60=(25/5)/(60/5)=5/12,39/78=(39/39)/(78/39)=1/2
24/36=(24/12)/(36/12)=2/3,64/80=(64/16)/(80/16)=4/5,35/49=(35/7)/(49/7)=5/7
20/56=(20/4)/(56/4)=5/14,25/60=(25/5)/(60/5)=5/12,39/78=(39/39)/(78/39)=1/2
24/36=(24/12)/(36/12)=2/3,64/80=(64/16)/(80/16)=4/5,35/49=(35/7)/(49/7)=5/7
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