谁帮我做几个题:1+(-2)+3+(-4)+5+(-6)+.+(-2008)+2009等于
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/29 01:17:34
谁帮我做几个题:1+(-2)+3+(-4)+5+(-6)+.+(-2008)+2009等于
(-11)+(-12)+(13)+.+(-19)等于
1+(-2)+3+(-4)+5+(-6)+.+9等于
(-11)+(-12)+(13)+.+(-19)等于
1+(-2)+3+(-4)+5+(-6)+.+9等于
![谁帮我做几个题:1+(-2)+3+(-4)+5+(-6)+.+(-2008)+2009等于](/uploads/image/z/18263705-41-5.jpg?t=%E8%B0%81%E5%B8%AE%E6%88%91%E5%81%9A%E5%87%A0%E4%B8%AA%E9%A2%98%EF%BC%9A1%2B%EF%BC%88-2%EF%BC%89%2B3%2B%EF%BC%88-4%EF%BC%89%2B5%2B%EF%BC%88-6%EF%BC%89%2B.%2B%EF%BC%88-2008%EF%BC%89%2B2009%E7%AD%89%E4%BA%8E)
1+(-2)+3+(-4)+5+(-6)+.+(-2008)+2009=1005
(-11)+(-12)+(13)+.+(-19)= -135
1+(-2)+3+(-4)+5+(-6)+.+9=5
(-11)+(-12)+(13)+.+(-19)= -135
1+(-2)+3+(-4)+5+(-6)+.+9=5