1. 

   math_celebrity Administrator Staff Member

   2d = (a - b)/(b - c) for d
   
   Divide each side by 2 to isolate d:
   2d/2 = (a - b)/2(b - c)
   
   Cancel the 2's on the left side, we get:
   d = (a - b)/2(b - c)

    

   math_celebrity, Sep 12, 2019

   #1
   
   

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