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45(9+5)n

 Apr 16, 2016
 #1
avatar+2499 
+3

45*14n = 630n

 Apr 16, 2016
edited by Solveit  Apr 16, 2016
 #2
avatar+9675 
+1

=45(14)(n)

=630n

 Apr 17, 2016

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