When the son will be as old as his father today, the sum of their ages then will be 126. When the father was as old as his son is today, the sum of their ages then was 38. Find their present ages.

Explanation

To solve the problem, we will define the present ages of the father and son and set up equations based on the information given in the question.

### Step 1: Define Variables
Let:
- \( f \) = present age of the father
- \( s \) = present age of the son

### Step 2: Set Up the First Equation
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