21x7y divizibil cu 5= y = 0,5 21x7y = 21175 ,21275,21375,21475,21575,21675,21775,21875,21975,21170,21270,21370,21470,21570,21570,21670,21770,21870,21970 21x7y divizibil cu 3 = 21172,21271,21372,21273,21474,21570,21570,21075,21276,21672,21177,21771,21378,21873 ,,,,,, sunt bucuroasa ca te-am putut ajuta te rog da-mi coronita