如题所述
第1个回答 2010-11-25
((5+7)*(3-1)
(7-3)(5+1)"本回答被提问者和网友采纳
(7-3)(5+1)"本回答被提问者和网友采纳
第2个回答 2010-11-25
1: (1 + 5) × (7 - 3)
2: (5 + 1) × (7 - 3)
3: (5 + 7) × (3 - 1)
4: (7 + 5) × (3 - 1)
5: (7 - 3) × (1 + 5)
6: (7 - 3) × (5 + 1)
7: (3 - 1) × (5 + 7)
8: (3 - 1) × (7 + 5)
2: (5 + 1) × (7 - 3)
3: (5 + 7) × (3 - 1)
4: (7 + 5) × (3 - 1)
5: (7 - 3) × (1 + 5)
6: (7 - 3) × (5 + 1)
7: (3 - 1) × (5 + 7)
8: (3 - 1) × (7 + 5)
第3个回答 2010-11-25
(7-3)*(5+1)
(3-1)*(7+5)
两种基本式子,
(3-1)*(7+5)
两种基本式子,
第4个回答 2010-11-25
(5-1)X(7-3)=24