Question

the difference between a 2 digit number and the number obtained by inter changing its digits is 63. what is the difference between the digits of the numbers ? ​


please answer fast please please

Answer 1

let ten's digit be x

unit digit be y

10x+y-(10y+x)=63

10x+y-10y-x=63

9x-9y=63

Taking 9 common we get,

9(x-y)=63

x-y=7