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Uploaded by tsungyungmath on Aug 5, 2011
三隻小豬體重共100公斤,豬弟比豬妹重20%,豬哥比豬妹重80%,問三隻小豬體重各多少公斤?
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謝謝你..我們會再改進!!~
tsungyungmath 5 months ago
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謝謝你..我們會再改進!!~
tsungyungmath 5 months ago