(-0.7)+(-0.4)+1+(-0.3)+0.5
问题描述:
(-0.7)+(-0.4)+1+(-0.3)+0.5
答
(-0.7)+(-0.4)+1+(-0.3)+0.5
=(-0.7-0.3)+1+(-0.4+0.5)
=-1+1+0.1
=0.1