数学题啊啊啊求过程(-270)×4/1+0.25×21.5+(-8又2/1)× (-25%)=

问题描述:

数学题啊啊啊求过程(-270)×4/1+0.25×21.5+(-8又2/1)× (-25%)=

(-270)×4/1+0.25×21.5+(-8又2/1)× (-25%)
=0.25x(-270+21.5+8.5)
=-0.25x240
=-60=0.25x(-270+21.5+8.5)8.5不是负数么求解答(-8又2/1)× (-25%) 负负得正那也不等于8.5啊等于2.125已经把25%=0.25 提出来了,括号就剩8了呀