Question

The sum of the digits of a two-digit number is 12. If 18 is added to it, the digits are reversed. Find the
number​

Answer 1

Answer:

Step-by-step explanation:

Let x be the one's digit and y be the ten's digit therefore number=10y+x

According to question,

X+Y=12….(1)

10y+x+18=10x+y

9y -9x=-18

Y-X=-2……(2)

(1)+(2)

2y=10

y=5

X=7

Therefore the number=57

Answer 2

Answer 57

Step-by-step explanation:

suppose the number is 10a+b,it's obvious a>2 since a+b=12

As 10a+b+18=10*b+a

So 9(b-a)=18

b-a=2

Also a+b=12 ,so a=5,b=7