Question

in a two digit number the sum of the digits is 9 .if the digits are reversed the number is increased by 9 ..find the number .linear equations in two variables​

Answer 1

Step-by-step explanation:

Let x be the ones digit

⇒ The tens digit is 9−x

10(9−x)+x+63=10x+(9−x)

⇒90−10x+x+63=10x+9−x

⇒153−9x=9x+9

⇒153−9=18x

⇒144=18x

⇒x=8

⇒9−x=9−8=1

Therefore, the number we are looking for is

10(1)+8=18

hope it will help you!!