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  5. 為什麼不能是答案（-5）：3呢
Mathematics
初中
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灰灰
灰灰

為什麼不能是答案（-5）：3呢

在坐標平面上,若點(a,b)在直線3x+5y=0上,則a:b= -5:3 3x=-5y 5:-3 x=y= -5:3
數學 國中複習

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