5.25*0.55+4.75*(11/20)
问题描述:
5.25*0.55+4.75*(11/20)
答
5.25*0.55+4.75*(11/20)
=5.25*0.55+4.75*0.55 (11/20=0.55)
乘法分配率:=0.55*(5.25+4.75)
=0.55*10
=5.5
加油!不懂的话再问,诚答!