問題詳情
7. 若 x＝y＝2 是 ax－b y =12 的一組解，則 15a－10b＋12=？
(A) 24
(B) 37
(C) 60
(D) 72
(A) 24
(B) 37
(C) 60
(D) 72
參考答案
無參考答案
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