5.45×0.75+4.55×75%-四分之三
=5.45×0.75+4.55×0.75-0.75
=0.75x(5.45+4.55)-0.75
=0.75x10-0.75
=7.5-0.75
=6.75
如果本题有什么不明白可以追问,
另外发并点击我的头像向我求助,请谅解,
5.45×0.75+4.55×75%-四分之三
=5.45×0.75+4.55×0.75-0.75
=0.75x(5.45+4.55)-0.75
=0.75x10-0.75
=7.5-0.75
=6.75
如果本题有什么不明白可以追问,
另外发并点击我的头像向我求助,请谅解,