40.25-((37.75+12又1/4)*1/5-15)-4
来源:学生学帮网 编辑:学帮网 时间:2024/07/06 16:56:50
40.25-((37.75+12又1/4)*1/5-15)-4
40.25-[(37.75+12又1/4)*1/5-15]-4
=40.25-[50*1/5-15]-4
=40.25+5-4
=41.25
40.25-((37.75+12又1/4)*1/5-15)-4
40.25-[(37.75+12又1/4)*1/5-15]-4
=40.25-[50*1/5-15]-4
=40.25+5-4
=41.25