Find the number of tens in 45.
The tens digits of a two-digit number exceed the unit digits by 5. If the digits are reversed , the new number is less by 45. If the sum of digits is 9, find the numbers.
The tens digit of a two-digit number exceeds the units digit by 5. If the digits are reversed, the new number is less by 45. If the sum of their digitsis 9, find the numbers.