若a大于0,b小于0,则b分之a________0,b分之-a________0,-b分之a________0.

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若a大于0,b小于0,则b分之a________0,b分之-a________0,-b分之a________0.
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若a大于0,b小于0,则b分之a________0,b分之-a________0,-b分之a________0.
若a大于0,b小于0,则b分之a________0,b分之-a________0,-b分之a________0.

若a大于0,b小于0,则b分之a________0,b分之-a________0,-b分之a________0.
若a大于0,b小于0,则b分之a<0,b分之-a>0,-b分之a>0

若a大于0,b小于0,则b分之a__小于__0,b分之-a__大于__0,-b分之a__大于__0

b分之a小于0 b分之负a大于0 负b分之a大于0
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