5 1/3+1 2/3×(5/6-1/3)=
5\6 - 1\3=5\6 - 2\6 = 3\6 = 1\2 1 2\3 х 1\2 = 5\3 х 1\2 = 5\6 5 1\3 + 5\6 =5 2\6 + 5\6 = 5 7\6= 6 1\6
51/3+12/3х(5/6-1/3)=17+4х0.5=17+2=19