Problem: the sum of digits of a two digit number is 13 , the difference between the digits is 5 . find the number
Rationale: "description : = > x + y = 13 , x - y = 5 adding these 2 x = 18 = > x = 9 , y = 4 . thus the number is 94 answer b"
annotated_formula: add(multiply(divide(add(13, 5), const_2), 13), subtract(13, divide(add(13, 5), const_2)))