7 加法 84 等于多少？

7 + 83 = 90 7 + 85 = 92 7 + 82 = 89 7 + 86 = 93 7 + 87 = 94 7 + 81 = 88 7 + 88 = 95 7 + 80 = 87 6 + 84 = 90 8 + 84 = 92 5 + 84 = 89 9 + 84 = 93 4 + 84 = 88 10 + 84 = 94 11 + 84 = 95 3 + 84 = 87 1 + 90 = 91 2 + 89 = 91 3 + 88 = 91 4 + 87 = 91 5 + 86 = 91 6 + 85 = 91 81 + 43 = 124 91 + 25 = 116 36 + 73 = 109 52 + 66 = 118 65 + 93 = 158 64 + 80 = 144 96 - 5 = 91 13 × 7 = 91