(7-4 3/4)*1 1/3+(6-4 2/5):1 1/3=
(7-4 3/4)* 1 1/3+(6-4 2/5):1 1/3= 3 17/20 1) 7-4 3/4= 2 1/4 2) 6-4 2/5= 1 3/5 3) (2 1/4 + 1 3/5)* 11/3:1 1/3= 3 17/20