Question

Sum of the digits of a two-digit number is 8.Find the 2-digit number if both the digits are equal.​

Answer 1

Answer:

Let the two-digit number be 10x+y

Then, we have : x+y=8

and 10y+x=10x+y−54or,x−y=54/9=6

Solving equations (1) and (2), we get

x=(8+6)/2=7 and y=1

∴ The required number =7×10+1=71

Answer 2

Answer:

4

Step-by-step explanation:

given:

the sum of two digit no.=8

both the no.s are same

so let the 1st no. is x

so second no. is also be x

equation=x+x=8

=2x=8

=x=8÷2

=x=4