а) 3 5/6 -1 1/3=(3-1)+(5/6-1/3)=2+(5/6-2/6)=2 3/6=2 1/2
б) 4 8/9 -1 1/6=(4-1)+(8/9-1/6)=3+((8*2)/(9*2)-(1*3)/(6*3))=3+(16/18-3/18)=3 13/18
в) 2 3/4 -1 1/6=(2-1)+(3/4-1/6)=1+((3*3)/(4*3)-(1*2)/(6*2))=1+(9/12+2/12)=1 11/12
г) 4 1/5 -2 3/10=(4-2)+(1/5-3/10)=2+(2/10-3/10)=2-1/10=1+(10/10-3/10)=1 7/10
д) 2 2/7-1 3/5=(2-1)+(2/7-3/5)=1+(2*5/35-3*7/35)=1+(10/35-7/35)=1 3/35
е) 4 1/6-1 2/3=(4-1)+(1/6-2/3)=3+(1/6-2*2/6)=3+(1/6-4/6)=2+(6/6+1/6-4/6)=2 3/6=2 1/2