Question

the age of a person was twice the age of his son five years ago. write a linear equation in two variable to represent this statement

Answer 1

Let age of person=x
                 son=y
x-5=2(y-5)
x-5=2y-10
2y-x=5

Answer 2

let the age of person be x.
let the age of son be y

5 years ago their ages were-
person=x-5
son=y-5

answer

x-5=2(y-5)

if we want to simplify it then
x-5=2y-10
x-2y=-5