191问答库 > 已知2分之x=3分之y=4分之z不等于0,则2x-3y+z分之x+2y-3z的值为

已知2分之x=3分之y=4分之z不等于0,则2x-3y+z分之x+2y-3z的值为

2025-03-16 23:22:01
推荐回答（1个）
回答1：

设x/2＝y/3＝z/4＝k﹙k≠0﹚
∴ x＝2k,y＝3k,z＝4k
﹙x＋2y－3z﹚/﹙2x－3y＋z﹚
＝﹙2k＋6k－12k﹚/﹙4k－9k＋4k﹚
＝﹙﹣4k﹚/﹙﹣k﹚
＝4.

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