Question

a two digit number os 9times the sum of its digits. if its units and tens digit be x and y respectively, write this in the form of liner equation in two variables.​

Answer 1

Answer:

8x-y=0

Step-by-step explanation:

unit digit is x

tens digit is y

So the number is 10y + x

Given, the number is 9 times the sum of its digits

⇒10y+x=9(x+y)

⇒10y+x=9x+9y

⇒8x-y=0