(-1\42)÷(5\6-3\7+1\3-9\14)简便计算
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![(-1\42)÷(5\6-3\7+1\3-9\14)简便计算](/uploads/image/z/33236-44-6.jpg?t=%28-1%5C42%29%C3%B7%285%5C6-3%5C7%2B1%5C3-9%5C14%29%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
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(-1\42)÷(5\6-3\7+1\3-9\14)简便计算
(-1\42)÷(5\6-3\7+1\3-9\14)简便计算
(-1\42)÷(5\6-3\7+1\3-9\14)简便计算
=(-1/42)/(35/42-18/42+14/42-27/42)=(-1/42)/(35-18+14-27)*42=-1/4=-0.25