SOLUTION: The sum of the digits of a 2-digit number is 9. if the digits were reversed, the new number would be 9 more than the original number. Find the original number.

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Question 397917: The sum of the digits of a 2-digit number is 9. if the digits were reversed, the new number would be 9 more than the original number. Find the original number.
Answer by stebko(4) About Me  (Show Source):
You can put this solution on YOUR website!
a+b=9
10b+a-10a-b=9
a=4 b=5
Answer 45