A two digit odd number that equals 17

Question

The sum of the digits of an odd 2-digit number is 17. What is the number?

Answer 1

x+y=17

y can be 1,3,5,7 or 9

Let's start 9

x+9=17

x=8

So the buner is 89

7, 5, 3 and 1 doesn't work

For example In order x+7=17, x should be 10, which is contradiction; x is one digit number. If 7 doesn't work, lower numbers shouldn't works as well.