Question 391379
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Hi,         
Let x and 7x represent the son's and father's ages 10 year ago.
Question states***
2(7x+12) = 5(x + 12)
solving for x
 14x + 24 = 5x = 60
      9x = 36
       x = 4, son's age 10 years ago. His father 28, ten year ago
 Son is NOW 14 and his father 38

CHECKING our Answer using status 2 years from NOW
 2*(38+2) = 5*(14+2) = 80