Subject: linear equations
Who are you: Parent
I have found an answer for this just by going through what two numbers can equal 13, but I would like to know how to do it with linear equations...
"The sum of the digits of a two-digit number is 13. If the digits are reversed, the new number is 9 more than the original number. Find the original number."
Thank you in advance.
If the units digit of the number is b and the tens digit is a then the number is 10 a + b.
Does this help?