速回!1.能否在下面几个数的前面添加正号或负号,是它们的和为零 ①1,2,3 ;②1,2,3,4;③1,2,3,4,5;④2,4,6,8,10,12;⑤1,2,3,…,11,122.你能否找出6个正整数,并在其前面添加正负号,使它们的和为0(希
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![速回!1.能否在下面几个数的前面添加正号或负号,是它们的和为零 ①1,2,3 ;②1,2,3,4;③1,2,3,4,5;④2,4,6,8,10,12;⑤1,2,3,…,11,122.你能否找出6个正整数,并在其前面添加正负号,使它们的和为0(希](/uploads/image/z/6741180-36-0.jpg?t=%E9%80%9F%E5%9B%9E%211.%E8%83%BD%E5%90%A6%E5%9C%A8%E4%B8%8B%E9%9D%A2%E5%87%A0%E4%B8%AA%E6%95%B0%E7%9A%84%E5%89%8D%E9%9D%A2%E6%B7%BB%E5%8A%A0%E6%AD%A3%E5%8F%B7%E6%88%96%E8%B4%9F%E5%8F%B7%2C%E6%98%AF%E5%AE%83%E4%BB%AC%E7%9A%84%E5%92%8C%E4%B8%BA%E9%9B%B6+%E2%91%A01%2C2%2C3+%EF%BC%9B%E2%91%A11%2C2%2C3%2C4%EF%BC%9B%E2%91%A21%2C2%2C3%2C4%2C5%EF%BC%9B%E2%91%A32%2C4%2C6%2C8%2C10%2C12%EF%BC%9B%E2%91%A41%2C2%2C3%2C%E2%80%A6%2C11%2C122.%E4%BD%A0%E8%83%BD%E5%90%A6%E6%89%BE%E5%87%BA6%E4%B8%AA%E6%AD%A3%E6%95%B4%E6%95%B0%2C%E5%B9%B6%E5%9C%A8%E5%85%B6%E5%89%8D%E9%9D%A2%E6%B7%BB%E5%8A%A0%E6%AD%A3%E8%B4%9F%E5%8F%B7%2C%E4%BD%BF%E5%AE%83%E4%BB%AC%E7%9A%84%E5%92%8C%E4%B8%BA0%EF%BC%88%E5%B8%8C)
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