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un sacou costa cat trei camasi .stiind ca cinci camasi si doua sacouri costa 760 de lei Afla pretul unui sacou

Răspuns :

1s=3c                               1s=3c                       1s=3c             1s=3c
5c+2s=760                       5c+2·3c=760            11c=760          c=760/11

1s=3·760/11             un sacou= 2280/11
1c=760/11                o camasa=760/11