(7-4 3/4)*1 1/3+(6-4 2/5)/1 1/3

= 2 1/4 * 1 1/3 + 1 3/5 * 3/4 = 9/4 * 4/3 + 8/5 * 3/4 = 3 + 6/5 = 3 + 1 1/5 = 4 1/5

[latex]1)7-4 frac{3}{4} =2 frac{1}{4} \ 2)2 frac{1}{4} *1 frac{1}{3} = frac{9}{4} * frac{4}{3} =3 \ 3)6-4 frac{2}{5} =1 frac{3}{5} \ 4)1 frac{3}{5}:1 frac{1}{3} = frac{8}{5} : frac{4}{3} = frac{8}{5} * frac{3}{4} = frac{6}{5} =1 frac{1}{5} \ 5)3+1 frac{1}{5} =4 frac{1}{5} [/latex]