4,5,6,7怎么组成24点?

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4,5,6,7怎么组成24点?

4,5,6,7怎么组成24点?
4,5,6,7怎么组成24点?

4,5,6,7怎么组成24点?
1:4 × (5 - 6 + 7)=24(不改变顺序)
2:(5 + 7) × (6 - 4)=24

(6-4)(5+7)

4*(5-(6-7))
4*((5-6)+7)
4*((5+7)-6)
4*(5+(7-6))
4*((7+5)-6)
4*(7+(5-6))
4*(7-(6-5))
4*((7-6)+5)
(5-(6-7))*4
((5-6)+7)*4
((5+7)-6)*4
(5+(7-6))*4
(5+7)*(6-4)
(6-4)*(5+7)
(6-4)*(7+5)
((7+5)-6)*4
(7+(5-6))*4
(7+5)*(6-4)
(7-(6-5))*4
((7-6)+5)*4