How to check if a number is greater than another number in some quantity in javaScript?

Question

How to check if a number is greater than another number in some quantity in JS?

Answer 1

Use addition or Subtraction for this,

Example: let a = 20; let b = 30;

if((a + 10) > b ){
  console.log(' a + 10 is not equal to b');
}

or 
if(a  > ( b - 10) ){
  console.log(' a is not equal to b - 10');
}