M = Mother's Age
S = Shashi's Age
Set up a system of equations for now and in 8 years from now
Age of Shashi's mother is 12 years more than twice the age of shashi. After 8 years mothers' age will be 20 less than trice the age of Shashi. Find the present age of Shashi and his mother.
Answers- Shashi-16 years.
Please give a line by line solution.