web2.0calc
 
+0  
 

 is iti p

0
500
1
avatar+10 

-4 - -15

 Apr 27, 2016

1+0 Answers

 #1
avatar+130548 
0

-4 - (- 15 )  =

 

-4 + 15  =

 

11

 

 

cool cool cool

 Apr 27, 2016

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