居然有先乘後除的法則。。。。。。。。
哈哈哈哈哈哈哈哈哈~~~~~~~~~~~~~~那麽加法是不是比減法優先啊??????
本帖於 2012-11-26 06:33:22 時間, 由版主 笑比哭好 編輯
居然有先乘後除的法則。。。。。。。。
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