+0  
 
0
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1
avatar

what is 9+-9+-7r

 Dec 22, 2014

Best Answer 

 #1
avatar+23246 
+5

9 + -9  =  0

0 + -7r  =  -7r

 Dec 22, 2014
 #1
avatar+23246 
+5
Best Answer

9 + -9  =  0

0 + -7r  =  -7r

geno3141 Dec 22, 2014

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