(1又3/4-7/8-7/12)/(-7/8)+(-8/3)

问题描述:

(1又3/4-7/8-7/12)/(-7/8)+(-8/3)


原式=(7/3-7/8-7/12)*(-8/7)+(-8/3)
=(7/3)*(-8/7)+(-7/8)*(-8/7)+(-7/12)*(-8/7)-8/3
=-8/3+1+2/3-3/8
=(-8/3+2/3+1)-3/8
=-1-3/8
=-11/8