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$20.00-k=$12.50

 

 

20.00

 Sep 10, 2015
 #1
avatar+130516 
+5

$20.00-k=$12.50      rearrange as

 

20 - 12.50 =  k 

 

7.50 = k

 

 

cool cool cool

 Sep 10, 2015

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