13 8 3 2算24
问题描述：
13 8 3 2算24
答
(13 + 3) × 2 - 8 =24
答
1: (13 + 3) × 2 - 82: ((13 + 3) × 2) - 83: (3 + 13) × 2 - 84: ((3 + 13) × 2) - 85: (2 × (13 + 3)) - 86: 2 × (13 + 3) - 87: (2 × (3 + 13)) - 88: 2 × (3 + 13) - 8