应用题 (1 10:2:10)在△ABC中,AD是BC边上的中线,若△ABD的周长是12,AB-AC=3,求△ACD的周长.
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![应用题 (1 10:2:10)在△ABC中,AD是BC边上的中线,若△ABD的周长是12,AB-AC=3,求△ACD的周长.](/uploads/image/z/7612608-48-8.jpg?t=%E5%BA%94%E7%94%A8%E9%A2%98+%281+10%3A2%3A10%29%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2CAD%E6%98%AFBC%E8%BE%B9%E4%B8%8A%E7%9A%84%E4%B8%AD%E7%BA%BF%2C%E8%8B%A5%E2%96%B3ABD%E7%9A%84%E5%91%A8%E9%95%BF%E6%98%AF12%2CAB-AC%3D3%2C%E6%B1%82%E2%96%B3ACD%E7%9A%84%E5%91%A8%E9%95%BF.)
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