pomocy !
oblicz:
⅔ * (1⅟7 -1⅟14) =2/3*(8/7-15/14)=2/3*(16/14-15/14)=2/3*1/14=2/421⅟2 : 2 + ( 3-1⅙) * 2=1 1/2:2+ (2 6/6-1 1/6)*2=1 1/2:2+1 1/5*2=3/2: 2/1+6/5*2=3/2*1/2+6/5*2/1=3/4+12/5=15/20+48/20=63/20=3 3/20
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⅔ * (1⅟7 -1⅟14) =2/3*(8/7-15/14)=2/3*(16/14-15/14)=2/3*1/14=2/42
1⅟2 : 2 + ( 3-1⅙) * 2=1 1/2:2+ (2 6/6-1 1/6)*2=1 1/2:2+1 1/5*2=3/2: 2/1+6/5*2=3/2*1/2+6/5*2/1=3/4+12/5=15/20+48/20=63/20=3 3/20