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对于初中来说,应用题是一个需要重点训练的领域,列方程是解答应用的常用手段之一,但如何快速有效地列出方程,找到解题思路,是大家需要时常训练的.如果能从题目中的每句话里找出关键字眼加以分析,再从题目中暗含的等量关系列出相关的方程,可以使一题多解成为可能.例1现有两监狱(1),在甲监狱有35个狱警(2),在乙监狱有27个狱警(3),现在另调28个狱警去支援(4),为了使在甲监狱的人数为乙监狱的人数的2倍(5),应调往甲、乙两监狱的狱警各多少人(6)?
For junior high school, the application of the problem is a need to focus on training areas, column equations is one of the commonly used means to answer applications, but how to quickly and effectively list the equation to find a solution ideas, we need to train from time to time, To find out the key words in every sentence in the subject and then to list the relevant equations from the implied equivalence relations in the title, it is possible to make one problem and multiple solutions possible.Example 1 The existing two prisons (1) A prison has 35 prison guards (2), B prison has 27 prison guards (3), and now another 28 guards to support (4), in order to make the number of prisoners in prison B twice the number of prisons (5 ), Should be transferred to A, B guards of the prison how many (6)?