根据24点游戏规则写出算式使-2，4，5，7的运算结果等于24

1: (4 - 2) (5 + 7)2: 4 2 (5 + 7)3: (4 2) (5 + 7)4: 4 (2 (5 + 7))5: (4 - 2) (7 + 5)6: 4 2 (7 + 5)7: (4 2) (7 + 5)8: 4 (2 (7 + 5))9: (4 (5 + 7)) 210: 4 (5 + 7) 211: 4 ((5 + 7) 2)12: (4 (7 + 5)) 213: 4 (7 + 5) 214: 4 ((7 + 5) 2)15: (5