1999又1999/2000乘以13 (8又2/5-4/5除以2/21)乘以4/23 7.68-(7/12+2又8/25-3又5/12) 全都简便计算各位大神们帮帮忙吧急啊~~~~~~~~~~~~~~~~~~~~~~~~~
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![1999又1999/2000乘以13 (8又2/5-4/5除以2/21)乘以4/23 7.68-(7/12+2又8/25-3又5/12) 全都简便计算各位大神们帮帮忙吧急啊~~~~~~~~~~~~~~~~~~~~~~~~~](/uploads/image/z/69154-34-4.jpg?t=1999%E5%8F%881999%2F2000%E4%B9%98%E4%BB%A513+%EF%BC%888%E5%8F%882%2F5-4%2F5%E9%99%A4%E4%BB%A52%2F21%EF%BC%89%E4%B9%98%E4%BB%A54%2F23+7.68-%EF%BC%887%2F12%2B2%E5%8F%888%2F25-3%E5%8F%885%2F12%EF%BC%89+%E5%85%A8%E9%83%BD%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E5%90%84%E4%BD%8D%E5%A4%A7%E7%A5%9E%E4%BB%AC%E5%B8%AE%E5%B8%AE%E5%BF%99%E5%90%A7%E6%80%A5%E5%95%8A%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E)
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