SOLUTION: The sum of the digit of a certain two-digit number is 7 Reversing its digits increases the number by 9.What is the number?

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Question 1113327: The sum of the digit of a certain two-digit number is 7 Reversing its digits increases the number by 9.What is the number?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
t Tens
u Ones or Units

system%28t%2Bu=7%2C10u%2Bt-%2810t%2Bu%29=9%29
Simplify and solve. The original number would be 10t%2Bu.