Question

how to solve this problem ​

Answer 1

Step-by-step explanation:

let ,

the one digit be x

and ten digit be y

therefore the number = (x +10y)

x+y = 8

or, x = 8 - y ----------(i)

According to the question

$x + 10y - 18 = 10x + y \\ 10y - y - 18 = 10x - x \\ 9y - 18 = 9x \\ 9(y - 2) =9x \\ y - 2 = x \\ y - 2 = 8 - y \\ y + y = 8 + 2 \\ 2y = 10 \\ y = 5$

so , x = 8-5 = 3

hence the number = x +10y

= 3 +5× 10

= 3+50

= 53