問題詳情
下列何者能消去二元一次聯立方程式 
中的一個未知數?
(A) (1)＋(2)×2
(B) (1)×3＋(2)×3
(C) (1)－(2)×2
(D) (1)×4－(2)×3
參考答案
無參考答案
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