10又1/6-（2又3/4除1又3/8+2/5*1又1/4）=61/6-(11/4÷11/8+2/5*5/4)=61/6-(11/4*8/11+2/4)=61/6-(2+1/2)=61/6-5/2=61/6-15/6=(61-15)/6=46/6=23/3为七又三分之二.
7又3分之二
