嫌分少就说哈~但答案一定要完整、正确的!1.已知A与B互为倒数,-C与D/2互为相反数,且|X|=3,求2AB-2C+D+X/32.计算|1/21-1/20|+|1/22-1/21|+|1/23-1/22|+……+|1/30-1/293.已知|3X-4|+|2Y-5|=0,求2X-Y的值.
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![嫌分少就说哈~但答案一定要完整、正确的!1.已知A与B互为倒数,-C与D/2互为相反数,且|X|=3,求2AB-2C+D+X/32.计算|1/21-1/20|+|1/22-1/21|+|1/23-1/22|+……+|1/30-1/293.已知|3X-4|+|2Y-5|=0,求2X-Y的值.](/uploads/image/z/1526461-61-1.jpg?t=%E5%AB%8C%E5%88%86%E5%B0%91%E5%B0%B1%E8%AF%B4%E5%93%88%7E%E4%BD%86%E7%AD%94%E6%A1%88%E4%B8%80%E5%AE%9A%E8%A6%81%E5%AE%8C%E6%95%B4%E3%80%81%E6%AD%A3%E7%A1%AE%E7%9A%84%211.%E5%B7%B2%E7%9F%A5A%E4%B8%8EB%E4%BA%92%E4%B8%BA%E5%80%92%E6%95%B0%2C-C%E4%B8%8ED%2F2%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E4%B8%94%7CX%7C%3D3%2C%E6%B1%822AB-2C%2BD%2BX%2F32.%E8%AE%A1%E7%AE%97%7C1%2F21-1%2F20%7C%2B%7C1%2F22-1%2F21%7C%2B%7C1%2F23-1%2F22%7C%2B%E2%80%A6%E2%80%A6%2B%7C1%2F30-1%2F293.%E5%B7%B2%E7%9F%A5%7C3X-4%7C%2B%7C2Y-5%7C%3D0%2C%E6%B1%822X-Y%E7%9A%84%E5%80%BC.)
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