Пошаговое объяснение:
а) 3/8•9/11=1/8•3/11=3/88
б) 22/35•21/44=1/35•21/2=21/70
в) 5 3/5•1 4/21=28/5•25/21=28/1•5/21=140/21=6 14/21
г) 9 3/7•1 3/11=66/7•14/11=6/1•2/1=12/1=12
д) 1 1/15•5/16=16/15•5/16=1/3•1/1=1/3
е) 7/11•2 5/14=7/11•33/14=1/1•3/2=3/2=1 1/2
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Пошаговое объяснение:
а) 3/8•9/11=1/8•3/11=3/88
б) 22/35•21/44=1/35•21/2=21/70
в) 5 3/5•1 4/21=28/5•25/21=28/1•5/21=140/21=6 14/21
г) 9 3/7•1 3/11=66/7•14/11=6/1•2/1=12/1=12
д) 1 1/15•5/16=16/15•5/16=1/3•1/1=1/3
е) 7/11•2 5/14=7/11•33/14=1/1•3/2=3/2=1 1/2