[中學] 一題數學問題
(2a-3b) 與 (3a+b) 成正比a=5時b=-4,求a= -15/2時,b=多少?
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08/11 09:43, , 1F
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08/11 09:54, , 2F
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08/11 09:54, , 3F
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08/11 09:56, , 4F
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08/11 10:31, , 5F
08/11 10:31, 5F