Ответ:\(46+19=65\), \(46-19=27\).\(51+38=89\), \(51-38=13\).\(63+27=90\), \(63-27=36\).\(74+15=89\), \(74-15=59\).Ответ: 65 и 27; 89 и 13; 90 и 36; 89 и 59.