Question

A number consist of two digit whose sum is 9.If 27 is sub from the no. Its digit are reversed.Find the no.​

Answer 1

Answer:

let no. be 10x+y

x+y=9.....1

10x+y-27= 10y+x

9x-9y=27

x-y=3......2

from both eqn

x=6

y=3

no is 10x+y=10×6+3=63