贵刊93年第10期,94年第4期、第9期,95年第1期连续刊登了“巧用倒数知识解题”“抓不变量巧解题”,“也谈抓不变量…巧解题”“再谈一类分数题的解法”等几篇文章,都对如下一道分数题:“有一分数,它的分母加1,可约简为2/1;分母减1,可约简为3/2;这个分数是()/()”的解法,阐明了个人的观 No. 93, No. 10 in 1994, No. 4 in 1994, No. 9 in 1995, the first issue of a series of published “clever use of countdown knowledge problem solving”, “grasp the invariant clever solution”, “also talk about invariant ... Clever problem ”and“ talk about a solution to a fraction of the title, ”and several other articles, are as follows on a question mark:“ There is a fraction of its denominator plus 1, can be reduced to 2/1; Jane is 3/2; this score is () / () ”solution to clarify the concept of the individual