Question

a number is as much greater than 15 as it is less than 15 find the number

Answer 1

Let the number be x.
So x is as much greater than 15 as it is less than 15. Thus

x - 15 = 15 - x
⇒ x + x = 15 + 15
⇒ 2x = 30
⇒ x = 30/2
⇒ x = 15

So the number is 15. It is 0 greater than 15 and 0 less than 15.