Question 1147052
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Mike          + Fred = 5800      (1)

(Fred + 2000) + Fred = 5800


2*Fred = 5800 - 2000


2*Fred = 3800


  Fred = 3900/2 = 1900 dollars (Fred's salary)

  From equation (1),  Mike = 5800 - Fred = 5800 - 1900 = 3900 dollars (Mike's salary).
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Solved.


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Is everything clear to you in my solution ?