用5677算24点.

问题描述:

用5677算24点.

(5-7÷7)×6=24

1: (5 - 7 ÷ 7) × 6
2: (5 - (7 ÷ 7)) × 6
3: 6 × (5 - 7 ÷ 7)
4: 6 × (5 - (7 ÷ 7))