[-30]乘【-1/4】+|0.25]乘36.5+3又2/1乘【-25% 】
问题描述:
[-30]乘【-1/4】+|0.25]乘36.5+3又2/1乘【-25% 】
答
(-30)*(-0.25)+(0.25)*(36.5)+(3.5)*(-0.25)
=0.25*(30+36.5-3.5)
=63/4