Hi,         

Let x and (52-x)represent jack's and the father's age respectively

Write as we Read***

 (52-x) = 5x - 2

Solving for x

 52 - x = 5x - 2

    54 = 6x

     x = 9, jack's age.  The father's age is 43.   (52-9)



CHECKING our Answer***

  43 = 5*9 - 2  

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