Ответ:28 + 35 = 28 + 30 + 5 = 63.73 − 47 = 73 − 40 − 7 = 26.60 + 19 = 60 + 20 − 1 = 79.92 − 56 = 92 − 50 − 6 = 36.37 + 26 = 37 + 20 + 6 = 63.81 − 49 = 81 − 50 + 1 = 32.