解:设租了x条大船,(11-x)条小船6x+4(11-x)=52 x=411-x=11-4=7答:租了4条大船,7条小船
解:设租x条大船,11-x条小船得:6x+4(11-x)=526x+44-4x=52x=4,小船:11-4=7