Пример 1. (54 - 12) + (28 + 7) - 2 + 14 - (68 - 14) + 3 = 38
1) 54 - 12 = 42; 2) 28 + 7 = 35; 3) 68 - 14 = 54; 4) 42 + 35 = 77; 5) 77 - 2 = 75; 6) 75 + 14 = 89; 7) 89 - 54 = 35; 8) 35 + 3 = 38.
Пример 2. 45 + (14 + 18) - 50 + (23 + 18) = 68
1) 14 + 18 = 32; 2) 23 + 18 = 41; 3) 45 + 32 = 77; 4) 77 - 50 = 27; 5) 27 + 41 = 68