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Public casehint-only-linear-equation-001-zh-CN
一元一次方程
只给学生解方程的第一步提示，让他自己完成后面的运算。
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Student context
Problem context
学生还没有写出第一步。
Learning objective
只给学生解方程的第一步提示，让他自己完成后面的运算。
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No prior conversation. This case starts with the current student message.
Public boundary
What this page does not expose
This public development artifact intentionally excludes ground truth answers, known-misconception annotations, rubrics, and evaluator-only evidence. A future hidden challenge dataset must use the same fail-closed serialization boundary.