1) 1 1/11+ 27/55=1+1/11+27/55=1+ 1*5/11*5+27*1/55*1=1+5/55+27/55=1+ 5+27/55=1 32/55 2)3/7*3 1/2=3/7*1+3*2/2=3/7*7/2=3*7/7*2=21/14=3*7/2*7=3/2=1+1*2/2=1 1/2 3)1 32/55:3/2=87/55*2/3=87*2/55*3=174*165=58*3/55*3=3+1*55/55=1 3/55 ответ: 1 3/55
