When you add two numbers and the number obtained by reversing the order of its digits is 165. If the both numbers differ by three, find the number.
so you can see that 96+69=165 and 9-6=3.......satisfies the condition of the question.
one number is X ,other X +3 , so X +(x +3) = 561 or 2X = 561-3 =558 . now X =558/2 =279 ,one is 279 , other is 279 +3 =282 , answer.
The two numbers can be any unknown variables. We will take x and y.
Reversing 165, we get 561 which means that adding them will give me 561.