Ответ:47 − 2 = 45.47 − 20 = 27.54 − 3 = 51.54 + 30 = 84.76 − 20 = 56.76 + 20 = 96.68 + 8 + 2 = 68 + 10 = 78.45 + 6 + 4 = 45 + 10 = 55.