从12.24.56.68.三位数,列出四道加减法算式
12-(24/(56-58))
(12-24)*(56-58)
12+(24/(58-56))
(24-12)*(58-56)
(24/(58-56))+12
(56-58)*(12-24)
(58-56)*(24-12)
(12-24)*(56-58)
12+(24/(58-56))
(24-12)*(58-56)
(24/(58-56))+12
(56-58)*(12-24)
(58-56)*(24-12)
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