来自薄立彦的问题
【我会用算术,但考试又要用方程,】
我会用算术,但考试又要用方程,
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2020-06-25 00:41
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设鸡（或兔）有x只,则兔（或鸡）有（总数-x）只,鸡的腿数（或兔的）乘以x+兔的腿数（或鸡的）乘以x=腿的总数
2020-06-25 00:43:42
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