+0  
 
+5
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-5/12 - (-9/3)

 Oct 5, 2015
edited by Guest  Oct 5, 2015
 #1
avatar+12532 
+5

-5/12 - (-9/3)=-5/12+9/3=-5/12+36/12=31/12=2 7/12

laugh

 Oct 5, 2015

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