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設,男生人數為x,原來女生人數為(4分之3)x,轉進兩名女生是,(4分之3)x+2 則(4分之3)x+2 =11分之5((4分之3)x+2+x) 結果為33x+88=15x+40+20x 及x=24 原有人數為:x+(4分之3)x=24+18=42
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