Question

The sum of two natural numbers is 20 while their difference is 4. Find the numbers​

Answer 1

let the numbers be x and y

x+y=20 *

x-y=4

20-y-y=4

20-2y=4

-2y=-16

y=8

x=20-8=12

Answer 2

let the first number is x and second is y (x>y)

ATQ

x-y=4

x+y=20

by adding

2x=24

x=12

we know that x+y=20

12+y=20

y=20-12

y=8