(-0.5)+(+3.25)+(+2.75)+(-6.5)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 06:47:21
![(-0.5)+(+3.25)+(+2.75)+(-6.5)](/uploads/image/z/1091582-62-2.jpg?t=%EF%BC%88-0.5%EF%BC%89%2B%EF%BC%88%2B3.25%EF%BC%89%2B%EF%BC%88%2B2.75%EF%BC%89%2B%EF%BC%88-6.5%EF%BC%89)
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(-0.5)+(+3.25)+(+2.75)+(-6.5)
(-0.5)+(+3.25)+(+2.75)+(-6.5)
(-0.5)+(+3.25)+(+2.75)+(-6.5)
=[(-0.5)+(-6.5)]+[(+3.25)+(+2.75)]
=(-7)+6
=-1
-1