若2a-1>a-4,11a-5

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若2a-1>a-4,11a-5
若2a-1>a-4,11a-5

若2a-1>a-4,11a-5
若2a-1>a-4,11a-5a-4
得a＞-3 则a+3>0
11a-5

|a+3|-|5a-3|=a+3-(3-5a)=6a

条件没写对