1) We write the number that we want to find as:
Where x is the tens digit, and y is the unit digit.
2) Its reversed number is:
3) The sum of the number and its reverse is equal to 154:
4) One of the digits in the number is 2 less than the tens digit, so we have:
Replacing this in the previous equation that we found and solving for x:
So:
The number that we were looking for is:
Verification:
Answer: 86