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3-105.

While David was solving the equation , he wondered if he could first change the equation to . What do you think?  

  1. Solve both equations and verify that they have the same solution.

    Solve both equations for .
                          
                                  
                                               

    They have the same solution.

  2. What could you do to the equation to change it into ?

    Is there a common factor in the first equation?