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If I told you 3x + 2y = 9 and 4x + 6y = 6, you certainly know how to solve for x and y, right?
如果我给出 3x + 2y = 9,和 4x + 6y = 6 这两个方程,你们肯定知道怎么解出 x 和 y,对吧
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