a number is doubled and 9 is added . if resultant is trebled , it becomes 51 . what is that number
"explanation : = > 3 ( 2 x + 9 ) = 51 = > 2 x + 9 = 17 = > x = 4 answer : option a"
divide(subtract(51, multiply(const_3, 9)), multiply(const_3, const_2))