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1/23+303/2323+50505/232323+7070707/23232323+909090909/232323

来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/11 15:14:11
1/23+303/2323+50505/232323+7070707/23232323+909090909/232323232323-1
1/23+303/2323+50505/232323+7070707/23232323+909090909/232323
1/23+303/2323+50505/232323+7070707/23232323+909090909/232323232323-1
令y=1/23+303/2323+50505/232323+7070707/23232323+909090909/232323232323-1
303=101×3,2323=101×23
50505=10101×5,232323=10101×23
7070707=1010101×7,23232323=1010101×23
909090909=101010101×9,2323232323=101010101×23
故,y=1/23+3/23+5/23+7/23+9/23-1=2/23