(5 2\3 - 4 1\6) * 3 1\3

Решение
(5 2\3 - 4 1\6) * 3 1\3 = (5 4/6 - 4 1/6) * 3 (1/3) = 1(1/2) * 3(1/3) =
 = (3*10)/(2*3) = 10/2 = 5