This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Let x be son's age
     3x be father's age

3x-17 = 6(x-17)

3x -17 = 6x - 102

102 -17 = 6x -3x

85 = 3x

\frac{85}{3} = x = 28\frac{1}{3}

Son's age = 28 years 4 months
Father's age = 85 years                     (from 3x)