Question

the sum of the digits of a two digit number is 3 if the digits are reversed the new number is 9 less than the number what is the number ​

Answer 1

Answer:

21

Step-by-step explanation:

let 10s digit be x so unit digit =3-x

number = 10x+3-x

9x+3

reverse (3-x)×10+x

30-10x+x

30-9x

given: reversed number is 9 less than original number

30-9x+9=9x+3

30+9-3=9x+9x

36=18x

x=2

10s digit =2

unit digit =3-2

1

number=21