1. 

   math_celebrity Administrator Staff Member

   (2x + y) + (3x - 2y) = 80*80
   
   Combine like terms:
   (2 + 3)x + (1 - 2)y = 6,400
   5x - y = 6,400

    

   math_celebrity, May 1, 2017

   #1
   
   

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