Question

The sum of the digits of after two digit number is 12 if 18 is added to it the digits are reversed find the number through linear equation in one variable.

Answer 1

Answer:

57

Step-by-step explanation:

let the tens digit be x

then automatically one's digit becomes 12-x

hence number becomes

10x+12-x=9x+12

9x+12+18=10×(12-x)+x

9x+30=120-9x

18x=90

x=5

hence the number is 57