<PRE><B>Question 710642</B>
   4*-x + 4*3  = -16 -3x
    -4x+ 12  =-16 -3x
      add 4x on both sides
  4x-4x+12  =4x -16 -3x
       12  = x-16
   add 16 on both sides 
   12 +  16  = x-16 + 16

     28 = x
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