the sum of digits of a two digit number is 12 , the difference between the digits is 4 . find the number
"description : = > x + y = 12 , x - y = 4 adding these 2 x = 16 = > x = 8 , y = 4 . thus the number is 84 answer a"
add(multiply(divide(add(12, 4), const_2), 12), subtract(12, divide(add(12, 4), const_2)))