<PRE><B>Question 97590</B>
    

    7x - 21 = 5x - 14

    7x - 5x = -14 + 21

     2x = 7

       x = 7/2

       x = 3.5


check:

   7 * 3.5 -21 

 = 24.5 - 21

 = 3.5

    5x - 14 

  = 5*3.5 - 14

  = 17.5 - 14

   = 3.5</PRE>