若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为A.-a<-b<b<aB.-a<b<-b<aC.-a<b<a<-bD.b<-a<-b<a

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若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为A.-a<-b<b<aB.-a<b<-b<aC.-a<b<a<-bD.b<-a<-b<a
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若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为A.-a<-b<b<aB.-a<b<-b<aC.-a<b<a<-bD.b<-a<-b<a
若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为
A.-a<-b<b<a
B.-a<b<-b<a
C.-a<b<a<-b
D.b<-a<-b<a

若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为A.-a<-b<b<aB.-a<b<-b<aC.-a<b<a<-bD.b<-a<-b<a
a+b大于0,且b小于0
∴a>0,│a│>-b
∴a,b,-a,-b的大小关系为
a>-b>b>-a

a>-b>b>-a

a最大,-b次之,b第三,-a最小