the sum of the digits of a two-digit number is 15. The number obtained by interchanging its digits exceeds the given number by 9. Find the original number.
Answers
Answered by
3
Hey mate here is your answer. Supp. ondigit no. = x, two digit no. =y. Now we write whole sentence one by one
The sum of two digit number is 15.
therefore, x+y=15, eq. 1
The no. obtained by interchanging the digits exceeds the given no. by 9
(10x+y=(x+10y) = 9
10x+y=x+10y=9
10x+y-x+10y=9
9x-9y=9
x-y=1, eq.2
Now do this eq. by elimination Method pls mark me as brain list
The sum of two digit number is 15.
therefore, x+y=15, eq. 1
The no. obtained by interchanging the digits exceeds the given no. by 9
(10x+y=(x+10y) = 9
10x+y=x+10y=9
10x+y-x+10y=9
9x-9y=9
x-y=1, eq.2
Now do this eq. by elimination Method pls mark me as brain list
Similar questions