7/8/(7/4+7/8+7/12)+1/100*101+1/101*102+.+1/199*200-7/8/(7/4-7/8-7/12)+1/100*101+1/101*102+....+1/199*200 弄错了，应该是这个。

来源：学生作业帮助网 编辑：作业帮 时间：2024/08/29 19:15:58
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