(-18.63)+(-6.15)+(+18.20)+(+6.15)+(+0.43)
问题描述:
(-18.63)+(-6.15)+(+18.20)+(+6.15)+(+0.43)
答
(-18.63)+(-6.15)+(+18.20)+(+6.15)+(+0.43)
=(-18.63+18.20+0.43)+(-6.15+6.15)
=0+0
=0