四个数a,b,c,d已知a>b>c>d,a比b大5,b比c大7,a是d的3倍,且这四个数的平均数是22,求这四个数是多少?用算式设D的值为x,则有:A = 3x;B = A - 5 = 3x - 5;C = B - 7 = 3x - 5 - 7 = 3x - 12;由于:四个数的平均数是22
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![四个数a,b,c,d已知a>b>c>d,a比b大5,b比c大7,a是d的3倍,且这四个数的平均数是22,求这四个数是多少?用算式设D的值为x,则有:A = 3x;B = A - 5 = 3x - 5;C = B - 7 = 3x - 5 - 7 = 3x - 12;由于:四个数的平均数是22](/uploads/image/z/648956-20-6.jpg?t=%E5%9B%9B%E4%B8%AA%E6%95%B0a%2Cb%2Cc%2Cd%E5%B7%B2%E7%9F%A5a%3Eb%3Ec%3Ed%2Ca%E6%AF%94b%E5%A4%A75%2Cb%E6%AF%94c%E5%A4%A77%2Ca%E6%98%AFd%E7%9A%843%E5%80%8D%2C%E4%B8%94%E8%BF%99%E5%9B%9B%E4%B8%AA%E6%95%B0%E7%9A%84%E5%B9%B3%E5%9D%87%E6%95%B0%E6%98%AF22%2C%E6%B1%82%E8%BF%99%E5%9B%9B%E4%B8%AA%E6%95%B0%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E7%94%A8%E7%AE%97%E5%BC%8F%E8%AE%BED%E7%9A%84%E5%80%BC%E4%B8%BAx%2C%E5%88%99%E6%9C%89%EF%BC%9AA+%3D+3x%3BB+%3D+A+-+5+%3D+3x+-+5%3BC+%3D+B+-+7+%3D+3x+-+5+-+7+%3D+3x+-+12%3B%E7%94%B1%E4%BA%8E%EF%BC%9A%E5%9B%9B%E4%B8%AA%E6%95%B0%E7%9A%84%E5%B9%B3%E5%9D%87%E6%95%B0%E6%98%AF22)
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