(5-1/5)*5=(5-0.2)*5=4.8*5=24
如果不限于用加减乘除和括号的话……可以是(5-1/5)X5
应该是5*(5-1/5)
有4种算法1: 5 × (5 - 1 ÷ 5)2: 5 × (5 - (1 ÷ 5))3: (5 - 1 ÷ 5) × 54: (5 - (1 ÷ 5)) × 5
5*(5-1/5)