+0  
 
0
508
1
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1/6 - 1/3

    1/7

 Feb 14, 2016
 #1
avatar
0

[1/6 - 1/3] / 1/7=

[1 - 2] / 6=

-1/6 / 1/7=

-1/6 X 7 =

-7/6=-1 1/6

 Feb 14, 2016

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