a number is doubled and 9 is added . if the resultant is trebled , it becomes 75 . what is that number ?
"explanation : let the number be v . then , 3 ( 2 x + 9 ) = 75 . 2 x + 9 = 25 = > 2 x = 16 = > x = 8 answer : d ) 8"
divide(subtract(75, multiply(const_3, 9)), multiply(const_3, const_2))