Question

A two digit number is equal to 7 times of the sum of it's digits.The number formed by reversing it's digits is less than the original number by 18.Find the original number

Answer 1

Answer:

The seven is the orignal number

Answer 2

10x+y=7(x+y)
3x-6y=0
x-2y=0
10y+x=10x+y-18



Substitute the values of x and y