Question

Which two numbers have a sum of 26 and a difference of zero ?

Answer 1

Answer:

13

Step-by-step explanation:

x+x=26

2x=26

x=13

Answer 2

let first number =x

let 2nd number =y

x+y=26

x-y=0

x=y

x+x=26

2x=26

x=13 and y =13