7/18x4又1/2+ 1/6除以13又1/3-3又3/4÷5/16=？

Question

如题所述

Answer 1

=7/18×9/2+1/6÷40/3-15/4×16/5
=7/4+1/6×3/40-12
=7/4+1/80-12
=140/80+1/80-12
=141/80-12
=1又61/80-12
= -10又19/80