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解数学题

已知ab<0且a+b>0,ac>0,且a+c<0化简(a-b+|b-c|)/ab-bc
2025-03-30 08:36:07
推荐回答（1个）
回答1：

a+b>0，a+c<0，所以(a+b)-(a+c)>0，所以b-c>0

所以(a-b+|b-c|)/ab-bc = (a-b+b-c)/ab-bc = (a-c)/ab-bc

= (a-c)/b(a-c) = 1/b

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