(5 搭茄销知游- 纳猛1÷5)×5 = 24
解:1: 5 × (5 - 1 ÷ 5)2: 5 × [5 - (1 ÷ 5)]3: (5 - 1 ÷ 5) × 54: [(5 - (1 ÷ 5)]× 5
5^2-5+5-1=24
5 × (5 - 1 ÷ 5)=24
(5 - 1÷5)×5 = 24