2又5分之4×(-7分之4)+8.75×(-7分之4)+1.2×(-7分之4)-2又4分之3×(-7分之4)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 07:28:54
![2又5分之4×(-7分之4)+8.75×(-7分之4)+1.2×(-7分之4)-2又4分之3×(-7分之4)](/uploads/image/z/376988-68-8.jpg?t=2%E5%8F%885%E5%88%86%E4%B9%8B4%C3%97%EF%BC%88-7%E5%88%86%E4%B9%8B4%EF%BC%89%2B8.75%C3%97%EF%BC%88-7%E5%88%86%E4%B9%8B4%EF%BC%89%2B1.2%C3%97%EF%BC%88-7%E5%88%86%E4%B9%8B4%EF%BC%89%EF%BC%8D2%E5%8F%884%E5%88%86%E4%B9%8B3%C3%97%EF%BC%88-7%E5%88%86%E4%B9%8B4%EF%BC%89)
2又5分之4×(-7分之4)+8.75×(-7分之4)+1.2×(-7分之4)-2又4分之3×(-7分之4)
2又5分之4×(-7分之4)+8.75×(-7分之4)+1.2×(-7分之4)-2又4分之3×(-7分之4)
2又5分之4×(-7分之4)+8.75×(-7分之4)+1.2×(-7分之4)-2又4分之3×(-7分之4)
2又(4/5)×(-4/7)+8.75×(-4/7)+1.2×(-4/7)-2又(3/4)×(-4/7)
=(2又(4/5)+8.75+1.2-2又(3/4))×(-4/7)
=((14/5)+8.75+1.2-(11/4))×(-4/7)
=(2.8+8.75+1.2-2.75)×(-4/7)
=10×(-4/7)
=-40/7
=-5又(5/7)