A) 8 - 3 3/4 b) 4 - 2 3/5 d) 9 - 5 1/6

[latex]8-3 frac{3}{4}=7 frac{4}{4}-3 frac{3}{4}=4 frac{1}{4} ; \ 4-2 frac{3}{5}=3 frac{5}{5}-2 frac{3}{5}=1 frac{2}{5}; \ 9-5 frac{1}{6}=8 frac{6}{6}-5 frac{1}{6}=3 frac{5}{6} . [/latex]