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数学
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-1-5a-3等于?
人气:243 ℃ 时间:2020-06-22 17:16:39
解答
-5a-4
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当a=_时,(68-5a)÷3=0;当a=_时,(68-5a)÷3=5.
当a=_时,(68-5a)÷3=0;当a=_时,(68-5a)÷3=5.
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已知5a+3/(a-2)(a-1)等于A/(a-2) +B/(a-1),A等于 ,B等于 .
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