两道数学题___送分中.

问题描述:

两道数学题___送分中.
8/(-0.2)=
(-2)/2分之1=
自助建站:309033839 757371426

8/(-0.2)
=8/(-1/5)
=8×(-5)
=-40
(-2)/(1/2)
=(-2)×2
=-4