(-0.5)+(+3.25)+(+2.75)+(-6.5)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/11 01:53:14
(-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)+(+3.25)+(+2.75)+(-6.5)
=[(-0.5)+(-6.5)]+[(+3.25)+(+2.75)]
=(-7)+6
=-1

-1