Question 262069
Let the number be xy
Given, x+y = 14   ...(1)
Also,if the digits are reversed, the new number is 18 less than the original number.
        10y+x = 10x+y-18
        10y+x-10x-y = -18
        9y-9x = -18
        y-x = -2    ...(2)
(1)+(2) => 2y = 12
           y = 6
(1)=>  x+6 = 14
       x = 14-6=8
So the required number is 86