I need help solving this problem using linear sytems?

Question

the units digit of a two digit number is twice the ten digits. if the digits are reversed, the new number is less than twice the original number. what is the original number plz explain cause i wanna know how to do it

Answer 1

Do you have the problem stated correctly? There are only four 2-digit numbers (if you exclude 00) which have a units digit that is twice the tens digit: 12, 24, 36, and 48. For each of these, the number formed by reversing the digits is less than twice the original number, so all four possibilities satisfy the condition.