(-0.125)+(+5)+(-7)+(+1\8)+(+2)=?
问题描述:
(-0.125)+(+5)+(-7)+(+1\8)+(+2)=?
答
原式
=-1/8+5-7+1/8+2
=1/8-1/8+(5+2-7)
=0+0
=0