3/10 от 5=5:10*3=1,5;////2/9 от 8/18=8/18:9/1*2/1=8/18*1/9*2/1=8/162*2/1=16/162=8/81;//////2/3 от 4 (3/8)=35/8*2/3=35/12=2 11/12;////40%от 2 1/6=13/6*4/10=26/30=13/15;////70%от 15 2/0=2*0,7=1,4;////0,60 от 3*(2/7 +5,3)=6/100 от 3*(2/7+53/10)=3/50от3*(20/70+371/70)=3/50 от 3/1*391/70=1173/70*3/50=3519/3500=1 19/3500
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3/10 от 5=5:10*3=1,5;////2/9 от 8/18=8/18:9/1*2/1=8/18*1/9*2/1=8/162*2/1=16/162=8/81;//////2/3 от 4 (3/8)=35/8*2/3=35/12=2 11/12;////40%от 2 1/6=13/6*4/10=26/30=13/15;////70%от 15 2/0=2*0,7=1,4;////0,60 от 3*(2/7 +5,3)=6/100 от 3*(2/7+53/10)=3/50от3*(20/70+371/70)=3/50 от 3/1*391/70=1173/70*3/50=3519/3500=1 19/3500