(-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
(-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
(-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