Закончите запись: а) 2/3=2•4 / 3•4=...; б) 5/7=5•2 / 7•2=...; в) 3/4=3•10 / 4•10=...; г) 2/5=2•8 / 5•8=...; д) 1/6=1•7 / 6•7=...; е) 3/2=3•100 / 2•100=...; • - умножение 1/2-дробь
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