1)1/2*3=3/6 и 2/3*2=4/6; 3/4*3=9/12 и 5/6*2=10/12
2)5/4*3=15/12 и 2/3*4=8/12;1/4*5=5/20 и 1/5*4=4/20
3)7/8*3=21/24 и 2/3*8=16/24;3/8*3=9/24 и 5/6*4=20/24
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1)1/2*3=3/6 и 2/3*2=4/6; 3/4*3=9/12 и 5/6*2=10/12
2)5/4*3=15/12 и 2/3*4=8/12;1/4*5=5/20 и 1/5*4=4/20
3)7/8*3=21/24 и 2/3*8=16/24;3/8*3=9/24 и 5/6*4=20/24