18+25-32
=43-32
=11人
某班共有32人参加体育有18人参加文艺有25人问参加两项活动有几人
某班共有32人参加体育有18人参加文艺有25人问参加两项活动有几人
数学人气:281 ℃时间:2020-03-19 02:55:48
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