Выполни действие,разложив уменьшаемое на слагаемые,а вычитаемое на разрядные слагаемые 61-12,61-23,61-47,83-16,83-37,83-48,83-64

(30+31)-(10+2), (59+2)-(20+3), (50+11)-(40+7), (80+3)-(30+7), (50+33)-(40+8), (40+43)-(60+4)

61 - 12 = (50 + 11) - (10 + 2) = (50 - 10) + (11 - 2) = 40 + 9 = 49
61 - 23 = (40 + 21) - (20 + 3) = (40 - 20) + (21 - 3) = 20 + 18 = 38
61 - 47 = (50 + 11) - (40 + 7) = (50 - 40) + (11 - 7) = 10 + 4 = 14
83 - 16 = (70 + 13) - (10 + 6) = (70 - 10) + (13 - 6) = 60 + 7 = 67
83 - 37 = (60 + 23) - (30 + 7) = (60 - 30) + (23 - 7) = 30 + 16 = 46
83 - 48 = (70 + 13) - (40 + 8) = (70 - 40) + (13 - 8) = 30 + 5 = 35
83 - 64 = (60 + 23) - (60 + 4) = (60 - 60) + (23 - 4) = 0 + 19 = 19