8. 48 + 49 +2 56+27+3 | 69-(26+24) 69-26+24 | 30-22 44-30 | 80-4 84-5

Решим примеры:

48 + 49 + 2 = 97 + 2 = 99

56 + 27 + 3 = 83 + 3 = 86

69 - (26 + 24) = 69 - 50 = 19

69 - 26 + 24 = 43 + 24 = 67

30 - 22 = 8

44 - 30 = 14

80 - 4 = 76

84 - 5 = 79