①(如下图),△ABC中,D是BC边上不与B,C重合的任意一点,M,N分别为AD,CM的中点,且S△ABC=8cm2,求△BMN的面积.②求方程3x+4y=24的自然数解.③为了奖励同学,老师花92元购买了甲书和乙书,已知甲书每本1
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![①(如下图),△ABC中,D是BC边上不与B,C重合的任意一点,M,N分别为AD,CM的中点,且S△ABC=8cm2,求△BMN的面积.②求方程3x+4y=24的自然数解.③为了奖励同学,老师花92元购买了甲书和乙书,已知甲书每本1](/uploads/image/z/96033-57-3.jpg?t=%E2%91%A0%EF%BC%88%E5%A6%82%E4%B8%8B%E5%9B%BE%EF%BC%89%2C%E2%96%B3ABC%E4%B8%AD%2CD%E6%98%AFBC%E8%BE%B9%E4%B8%8A%E4%B8%8D%E4%B8%8EB%2CC%E9%87%8D%E5%90%88%E7%9A%84%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9%2CM%2CN%E5%88%86%E5%88%AB%E4%B8%BAAD%2CCM%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E4%B8%94S%E2%96%B3ABC%3D8cm2%2C%E6%B1%82%E2%96%B3BMN%E7%9A%84%E9%9D%A2%E7%A7%AF.%E2%91%A1%E6%B1%82%E6%96%B9%E7%A8%8B3x%2B4y%3D24%E7%9A%84%E8%87%AA%E7%84%B6%E6%95%B0%E8%A7%A3.%E2%91%A2%E4%B8%BA%E4%BA%86%E5%A5%96%E5%8A%B1%E5%90%8C%E5%AD%A6%2C%E8%80%81%E5%B8%88%E8%8A%B192%E5%85%83%E8%B4%AD%E4%B9%B0%E4%BA%86%E7%94%B2%E4%B9%A6%E5%92%8C%E4%B9%99%E4%B9%A6%2C%E5%B7%B2%E7%9F%A5%E7%94%B2%E4%B9%A6%E6%AF%8F%E6%9C%AC1)
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