-0.5-3又4分之1+2.75-(+7又2分之1)

我要详细的过程。最好给我讲一下。
2025-01-05 01:04:43
推荐回答(2个)
回答1:

-0.5-3又4分之1+2.75-(+7又2分之1)
=-0.5-3.25+2.75-7.5
=-(0.5+3.25-2.75+7.5)
=-(3.75-2.75+7.5)
=-(1+7.5)
=-8.5

祝你开心

回答2:

-0.5-3又4分之1+2.75-(+7又2分之1)
=-0.5-3.25+2.75-7.5
=(2.75-3.25)-(0.5+7.5)
=-0.5-8
=-8.5