+0  
 
0
1218
1
avatar+18 

-1x minus 2x

 Aug 14, 2014

Best Answer 

 #1
avatar+130511 
+5

-1x - 2x = -3x

 

 Aug 14, 2014
 #1
avatar+130511 
+5
Best Answer

-1x - 2x = -3x

 

CPhill Aug 14, 2014

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