Question

Raju and balu are brothers balu is younger than Rajuby 3 years make an algebric expression?

Answer 1

Let Raju's age be x
nd Balu's age be y
ATQ,
x=y+3
or
y=x-3

Answer 2

let Rajyby's age be = x years

let Balu's age be = y years

         y = x - 3         or    y - x + 3 = 0