138又4分之1+23.3*(2-4分之3)-1.25*38+(1+0.25)*28.7

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/01 03:53:56

138又4分之1+23.3*(2-4分之3)-1.25*38+(1+0.25)*28.7
138又4分之1+23.3*(2-4分之3)-1.25*38+(1+0.25)*28.7

138又4分之1+23.3*(2-4分之3)-1.25*38+(1+0.25)*28.7
138又4分之1+23.3*(2-4分之3)-1.25*38+(1+0.25)*28.7
=137+1.25+23.3*1.25-1.25*38+1.25*28.7
=137+1.25*(1+23.3-38+28.7)
=137+1.25*15
=137+18.75
=155.75

138.25+23.3*(2-0.75)-1.25*38+1.25*28.7=155.75

138又4分之1+23.3*(2-4分之3)-1.25*38+(1+0.25)*28.7
=138.25+23.3*1.25-1.25*38+1.25*28.7
=138.25+1.25*(23.3-38+28.7)
=138.25+14
=152.25