The sum of 2 digit numbers is 9.If the number reverses it exceeds the original number by 45. Find the number.
If the number is ab, then we have
a+b = 9
10b+a = 10a+b + 45
Now just solve for a and b.
a+b = 9
10b+a = 10a+b + 45
Now just solve for a and b.