Ответ:
1)16<4х<49
2)-15<-3у<-24
3)9<х+у<18
4)20<ху<80
6)2<3х-2у<14
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Ответ:
1)16<4х<49
2)-15<-3у<-24
3)9<х+у<18
4)20<ху<80
6)2<3х-2у<14