Ответ:\(54 + 38 = 92\), \(21 + 61 = 82\).\(88 - 35 = 53\), \(91 - 74 = 17\).\(58 - 39 = 19\), \(60 - 41 = 19\).\(91 - 69 = 22\), \(64 - 41 = 23\).Ответ: 58 − 39 и 60 − 41.