用+,-,X,÷符号,5,5,5,1等于24
问题描述:
用+,-,X,÷符号,5,5,5,1等于24
答
5X(5-1÷5)
答
5 × (5 - 1 ÷ 5)
5 × (5 - (1 ÷ 5))
(5 - 1 ÷ 5) × 5
(5 - (1 ÷ 5)) × 5