Ответ:\(3□ + 17 = □9\): \(32 + 17 = 49\).\(□6 - 3□ = 28\): \(66 - 38 = 28\).\(5□ + □4 = 81\): \(57 + 24 = 81\).\(□□ - 23 = 47\): \(70 - 23 = 47\).\(54 + 38 = 92\).\(72 - 4□ = □6\): \(72 - 46 = 26\).