1) 8/27:4/9=8/27•9/4=2/3;
2) 36/47:18=36/47•1/18=2/47;
3) 42:6/7=1/42•6/7=1/49;
4) 3 1/9:2 11/12=28/9:35/12=28/9•12/35=112/105=1 7/105;
5) 8/25:3 1/5:1 1/4=8/25:16/5:5/4=8/25•5/16•4/5=2/5•1/4•1=2/5•1/4•1/1=3/20;
6) 2,04:3,5=2 4/100:3 5/10=204/100:35/10=204/100•10/35=204/10•1/35=204/350.
5/5*5-5 = 26
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