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2分之1-5分之2等于多少？

2025-03-16 00:20:46

推荐回答（3个）

回答1：

解：2分之1-5分之2等于（ 1/10 ），【即等于0.1】
∵已知需求出2分之1-5分之2等于多少
X - Y = Z
∴2分之1 - 5分之2
= 1/2 - 2/5
= （1×5）/（2×5）- （2×2）/（5×2）
= 5/10 - 4/10
= (5-4)/10
= 1/10
= 0.1
答：2分之1-5分之2等于1/10，【即等于0.1】

回答2：

分母通分化同分母得十分之五减十分之四等于十分之一

回答3：

1/2-2/5=1/10

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