Question

The sum of the two digit number is 12. If the number formed by reversing its digits is greater than the original number by 18,find the original number...

Answer 1

Hello here is your answer by Sujeet yaduvanshi ☝☝☝☝☝☝☝

Let to be 1 unit digit number y
then

let to be 10unit digit number x

then

x+y=12

Again

10x+y+18=10y+x

10x-x+y-10y=-18

9x-9x=-18

9(x-y)=-17

x-y=-2

Solving the equation for elimination method

x+y=12
x-y=-2

______
2y=14

y=14/2=7

then,

x+y=12
x+7=12

x=12-7

x=5


then,


Original Number=10x+y

10*5+7
50+7

57


that's all


@Sujeet yaduvanshi