4 4 7 7=24 怎么算=24?
问题描述:
4 4 7 7=24 怎么算=24?
答
1:(4 - 4 ÷ 7) × 7
2:(4 - (4 ÷ 7)) × 7
3:7 × (4 - 4 ÷ 7)
4:7 × (4 - (4 ÷ 7))