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一元一次方程在做游戏时也很有用呢,请看王老师的讲解.江苏江阴曾经出过这样一道中考题:在3×3方格上做填数游戏,要求每行、每列及每条对角线上三个方格中的数之和都等于S,且填在图中三格中的数如图1,若要能填成,则S等于多少?乍一看,这道题目好像无从下手,甚至要用到幻方的相关知识,但是仔细分析后,却发现运用一元一次方程的知识能够轻松解决这道题目.分析:根据题目的要求,既然每一行、每一列及每条对角线上的三个方格中的数之和
One-dimensional equations are also useful when playing games. Please see Wang’s explanation. Jiangyin Jiangsu once had this exam question: Do a number-filled game on a 3×3 square, requesting each row, column and each The sum of the numbers in the three squares on the diagonal is equal to S, and the number filled in the three squares in the figure is shown in Fig. 1. If you want to fill in, then S is equal to how much? At first glance, this topic looks like Nothing to start with, even to use magic squares related knowledge, but after careful analysis, they found that the use of one-dimensional equation of knowledge can easily solve the problem. Analysis: According to the requirements of the title, since each row, each column and each pair The sum of the numbers in the three squares on the corner