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15问答网 > 一套衣服540元，上衣的价钱比裤子的2倍还多30元，这套衣服的上衣和裤子各是多少元，能用方程计

一套衣服540元，上衣的价钱比裤子的2倍还多30元，这套衣服的上衣和裤子各是多少元，能用方程计

2025-03-26 06:33:26

推荐回答（3个）

回答1：

解：设裤子X元，那么上衣（2X+30）元
X+2X+30=540
3X+30=540
3X=540-30
3X=510
X=170
那么，上衣：170×2+30=370（元）
答：这套衣服上衣370元，裤子170元。

回答2：

回答3：

（2x+30）+y=540

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