ab＜0且a+b＞0,ac＞0且a+c＜0,化简a-b+|b-c|÷(ab－bc)
问题描述：
ab＜0且a+b＞0,ac＞0且a+c＜0,化简a-b+|b-c|÷(ab－bc)
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答
a+b>0
0>a+c
a+b>a+c
b>c
|b-c|=b-c
a-b+|b-c|/(ab-bc)=a-b+(b-c)/(ab-bc)
请仔细检查题目中是否掉了符号,化简到此已是最简