Question

The sum of 2 digits of a number is 15. If 9 is added to the number, the resulting
number is equal to the original number with the digits interchanged. Find the
number.

Answer 1

Step-by-step explanation:

So, this is a classic question from 'Pair Of Linear Equations In Two Variables'

First covert the given data into two linear equations and solve it using any method which you are comfortable with.

I assumed the units digit to be 'y' and the tens to be 'x'

Refer the above image for better understanding.

Hope this helps

Answer 2

Answer:

the number is 78 ok i hope it help u