(1+1/2+1/3+1/4)×(1/2+1+1/3+1/4+1/5)×(1/2+1/3+1/4) =简便方法
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![(1+1/2+1/3+1/4)×(1/2+1+1/3+1/4+1/5)×(1/2+1/3+1/4) =简便方法](/uploads/image/z/333391-31-1.jpg?t=%281%2B1%2F2%2B1%2F3%2B1%2F4%29%C3%97%281%2F2%2B1%2B1%2F3%2B1%2F4%2B1%2F5%29%C3%97%281%2F2%2B1%2F3%2B1%2F4%29+%3D%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95)
(1+1/2+1/3+1/4)×(1/2+1+1/3+1/4+1/5)×(1/2+1/3+1/4) =简便方法
(1+1/2+1/3+1/4)×(1/2+1+1/3+1/4+1/5)×(1/2+1/3+1/4) =简便方法
(1+1/2+1/3+1/4)×(1/2+1+1/3+1/4+1/5)×(1/2+1/3+1/4) =简便方法
你的题目写错了,检查一下,再向我追问