а ) 4 1/6 + 2 1/3 =
б) 6 1/8 + 2 1/3=
в)4 2/15 + 1 9/10=
г) 5 4/5 - 2 3/20=
д)4 5/6- 2 2/5=
е) 3 1/3 - 1 3/4=
с объиснением

4 1/6 +2 1/3 = 25/6 + 7/3 = 25+14/6 = 39/6 = 6 3/6 = 6 1/2 = 6,56 1/8 + 2 1/3 = 49/8 +7/3 = 147+56/24 =564 2/15 + 1 9/10 = 5 4+27/30 = 5 31/305 4/5 - 2 3/20 = 3 16-3/20 = 3 13/204 5/6 - 2 2/5 = 2 25-12/30 = 2 13/303 1/3 -1 3/4 = 2 4-9/12 = 1 16-9/12 = 1 7/12