7 加法 77 等于多少？

7 + 76 = 83 7 + 78 = 85 7 + 75 = 82 7 + 79 = 86 7 + 74 = 81 7 + 80 = 87 7 + 73 = 80 7 + 81 = 88 6 + 77 = 83 8 + 77 = 85 5 + 77 = 82 9 + 77 = 86 4 + 77 = 81 10 + 77 = 87 11 + 77 = 88 3 + 77 = 80 1 + 83 = 84 2 + 82 = 84 3 + 81 = 84 4 + 80 = 84 5 + 79 = 84 6 + 78 = 84 18 + 2 = 20 81 + 81 = 162 90 + 69 = 159 80 + 45 = 125 65 + 42 = 107 70 + 64 = 134 100 - 16 = 84 84 × 1 = 84