how to make the addition of two digits in if statement c#?

Question

plz help me in this code

Answer 1

if ((a-b) || (b-a)) ... something like that, you need to specify what you need to do with some more detail pls as there are a few approaches you can use.

Answer 2

Let me give you a simple syntax
int x =5;
int y = 10;

if((x + y) >= 15)
{

}