3025-324=2701
55^2-18^2
所有跟帖:
• 2500-169+370=2701 -yzhl888- ♀ (0 bytes) () 04/17/2024 postreply 19:02:02
• 2500-169+370=2701 -yzhl888- ♀ (0 bytes) () 04/17/2024 postreply 19:02:02
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