分数的简便运算【注:“/”前是分子,后是分母】(1)(1+1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9)×(1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10)-【减号】(1+1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10)×(1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9)=【是
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![分数的简便运算【注:“/”前是分子,后是分母】(1)(1+1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9)×(1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10)-【减号】(1+1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10)×(1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9)=【是](/uploads/image/z/1244500-52-0.jpg?t=%E5%88%86%E6%95%B0%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%E3%80%90%E6%B3%A8%EF%BC%9A%E2%80%9C%2F%E2%80%9D%E5%89%8D%E6%98%AF%E5%88%86%E5%AD%90%2C%E5%90%8E%E6%98%AF%E5%88%86%E6%AF%8D%E3%80%91%EF%BC%881%EF%BC%89%281%2B1%2F2%2B1%2F3%2B1%2F4%2B1%2F5%2B1%2F6%2B1%2F7%2B1%2F8%2B1%2F9%29%C3%97%281%2F2%2B1%2F3%2B1%2F4%2B1%2F5%2B1%2F6%2B1%2F7%2B1%2F8%2B1%2F9%2B1%2F10%29%EF%BC%8D%E3%80%90%E5%87%8F%E5%8F%B7%E3%80%91%281%2B1%2F2%2B1%2F3%2B1%2F4%2B1%2F5%2B1%2F6%2B1%2F7%2B1%2F8%2B1%2F9%2B1%2F10%29%C3%97%EF%BC%881%2F2%2B1%2F3%2B1%2F4%2B1%2F5%2B1%2F6%2B1%2F7%2B1%2F8%2B1%2F9%EF%BC%89%3D%E3%80%90%E6%98%AF)
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