Question

The sum of digit of a no is 13 if the no is subtracted from the one obtained by inter changing the digit the result is 45 what is the no

Answer 1

Answer:

Step-by-step explanation:

→ x+y=13

→ 10y+x - (10x +y)=45

→ 9y-9x=45

⇒  therefore, y-x = 5

adding the equation

→ 2y=18

∴ y = 9 and x= 4