a+2的绝对值加上b-3的绝对值等于零,球b-a除以3的值讲讲怎么求出来的
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![a+2的绝对值加上b-3的绝对值等于零,球b-a除以3的值讲讲怎么求出来的](/uploads/image/z/545830-70-0.jpg?t=a%2B2%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%8A%A0%E4%B8%8Ab-3%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E7%AD%89%E4%BA%8E%E9%9B%B6%2C%E7%90%83b-a%E9%99%A4%E4%BB%A53%E7%9A%84%E5%80%BC%E8%AE%B2%E8%AE%B2%E6%80%8E%E4%B9%88%E6%B1%82%E5%87%BA%E6%9D%A5%E7%9A%84)
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