лора1728 А) =3/2-2/3=5/6
в)=9/8-1/4=7/8
д)=23/10-4/15=61/30=2 1/30
б) =5/4-1/3=11/12
г )=5/3-5/6=5/6
е) =13/4-5/6=29/12=2 5/12

yuliyam1 a)1 1/2-2/3 = 9\6 - 4\6 = 5\6
в) 1 1/8-1/4  = 9\8 - 2\8 = 7\8
д) 2 3/10-4/15  = 345\150 - 40\150 = 305\150 = 2 5\150 = 2 1\30
б) 1 1/4-1/3 = 15\12 - 4\12 = 11 \ 12
г) 1 2/3-5/6 = 10\6 - 5\6 = 5\6
е) 3 1/4-5/6 = 78\24 - 20\24 = 58\24 =  2 10\24 = 2 5\12