Question

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

Answer 1

Answer:

16 and 2

Step-by-step explanation:

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

Answer 2

Answer:

The numbers are 12 and 8

Step-by-step 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:

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