小学五年级数学题列方程甲数是乙数丙数丁数之和的二分之一,乙数是甲数丙数丁数之和的三分之一,丙数是甲数乙数丁数之和的四分之一,已知丁数是390,求甲乙丙丁的和?快----------
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![小学五年级数学题列方程甲数是乙数丙数丁数之和的二分之一,乙数是甲数丙数丁数之和的三分之一,丙数是甲数乙数丁数之和的四分之一,已知丁数是390,求甲乙丙丁的和?快----------](/uploads/image/z/44977-49-7.jpg?t=%E5%B0%8F%E5%AD%A6%E4%BA%94%E5%B9%B4%E7%BA%A7%E6%95%B0%E5%AD%A6%E9%A2%98%E5%88%97%E6%96%B9%E7%A8%8B%E7%94%B2%E6%95%B0%E6%98%AF%E4%B9%99%E6%95%B0%E4%B8%99%E6%95%B0%E4%B8%81%E6%95%B0%E4%B9%8B%E5%92%8C%E7%9A%84%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80%2C%E4%B9%99%E6%95%B0%E6%98%AF%E7%94%B2%E6%95%B0%E4%B8%99%E6%95%B0%E4%B8%81%E6%95%B0%E4%B9%8B%E5%92%8C%E7%9A%84%E4%B8%89%E5%88%86%E4%B9%8B%E4%B8%80%2C%E4%B8%99%E6%95%B0%E6%98%AF%E7%94%B2%E6%95%B0%E4%B9%99%E6%95%B0%E4%B8%81%E6%95%B0%E4%B9%8B%E5%92%8C%E7%9A%84%E5%9B%9B%E5%88%86%E4%B9%8B%E4%B8%80%2C%E5%B7%B2%E7%9F%A5%E4%B8%81%E6%95%B0%E6%98%AF390%2C%E6%B1%82%E7%94%B2%E4%B9%99%E4%B8%99%E4%B8%81%E7%9A%84%E5%92%8C%3F%E5%BF%AB----------)
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