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e + (-15) = 15?

 Jan 3, 2018
edited by Guest  Jan 3, 2018
 #1
avatar+8579 
+1

e + (-15)  =  15

 

e  -  15   =   15       Add  15  to both sides.

 

e   =   15 + 15

 

e   =   30

 Jan 4, 2018

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