作业帮9+99+999+9999+99999+999999+9999999+99999999=?
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/02 01:08:50
9+99+999+9999+99999+999999+9999999+99999999=?
9+99+999+9999+99999+999999+9999999+99999999=?
9+99+999+9999+99999+999999+9999999+99999999=?
=99999999 +9 100000008*8=800000016