ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````
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ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````ab<0且a+b>0
ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````
ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)
急`````````````````````````````````````呐``````````
ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````
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
楼上的a-b+(b-c)÷(ab-bc)可以把变成
a-c 1
——— = —
b(a-c) b
前面的证明条件和楼上一样
ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````
ab<0且a+b>0,ac>0且a+c<0,化简a-b+ㄧb-cㄧ÷ab-bc呃..好难懂哒题喔...
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