Question

the sum of the digits of a two number is 9 . also ,nine times this number is twice the number obtained by reversing the order of the digits. find the number​

Answer 1

Answer:

Step-by-step explanation:

x + y = 9 -------- 1

tens                     ones

  x                           y

10x + y = 9  = original number

9 ( 10 x + y ) = 2 ( 10 y + x ) --- reversed number

90x + 9y = 20y + 2x

90x - 2x = 20y - 9 y

88x = 11y

88x - 11y = 0

11 ( 8x - y ) = 0

8x - y = 0 --------- 2

x + y = 9

8x - y = 0

9x = 9

x = 1

x + y = 9

1 + y = 9

y = 8

10(1+ 8 = 10 + 8 = 81 ------ original number

reversed number 10 ( 8 ) + 1 = 80 + 1 = 81

hope it helps youuuu

plz do mark brainliest...

Answer 2

Answer:

18

Step-by-step explanation:

Attatched below...hope it helps