ABCd互为0的有理数,AB互为相反数,CD互为相反数,求5A+5B-3A/7D
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![ABCd互为0的有理数,AB互为相反数,CD互为相反数,求5A+5B-3A/7D](/uploads/image/z/6694056-0-6.jpg?t=ABCd%E4%BA%92%E4%B8%BA0%E7%9A%84%E6%9C%89%E7%90%86%E6%95%B0%2CAB%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2CCD%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E6%B1%825A%2B5B-3A%2F7D)
ABCd互为0的有理数,AB互为相反数,CD互为相反数,求5A+5B-3A/7D
ABCd互为0的有理数,AB互为相反数,CD互为相反数,求5A+5B-3A/7D
ABCd互为0的有理数,AB互为相反数,CD互为相反数,求5A+5B-3A/7D
题目应该是求5A+5B-3C/7D
(5A+5B-3C)/7D=[5(A+B)-3C]/7D=-3C/7D=3D/7D=3/7
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