(-1\2)+(+1\3)这题怎么写?

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(-1\2)+(+1\3)这题怎么写?(-1\2)+(+1\3)这题怎么写?(-1\2)+(+1\3)这题怎么写?=1/3-1/2=-1/6

(-1\2)+(+1\3)这题怎么写?
(-1\2)+(+1\3)这题怎么写?

(-1\2)+(+1\3)这题怎么写?
=1/3-1/2=-1/6