-48*(1/4-1/36-1/6+1/12)怎么做?

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-48*(1/4-1/36-1/6+1/12)怎么做?

-48*(1/4-1/36-1/6+1/12)怎么做?
-48*(1/4-1/36-1/6+1/12)怎么做?

-48*(1/4-1/36-1/6+1/12)怎么做?
原式=-12+4/3+8-4=-20/3