Question

What numbers have a sum of 20 and the difference is 4

Answer 1

16 and 2

Explanation:

I'm not sure honestly if this is correct, but I hope this helps.

Answer 2

The numbers are 12 and 8

Explanation:

let the numbers be x and y :

`x + y = 20 - - - (a) \\ x - y = 4 - - - (b)`

add (a) and (b):

`2x + 0y = 24 \\ 2x = 24 \\ x = 12`

find y:

`x + y = 20 \\ 12 + y = 20 \\ y = 20 - 12 \\ y = 8`