(1又3/4-7/8-7/12)*(-8/7)=
问题描述:
(1又3/4-7/8-7/12)*(-8/7)=
答
原式=-2+1+2/3
=-1/3
(1又3/4-7/8-7/12)*(-8/7)=
原式=-2+1+2/3
=-1/3