Question

sum of 28 and diference of 4

Answer 1

Step-by-step explanation:

16-12=4

and

16+12=4

hope this helps you

Answer 2

Step-by-step explanation:

This is a system of linear equations:

x+y=28

x−y=4

Add to get rid of y

2x=32

x=16

Plug back in to solve for y

16+y=28

y=12

The answer

x and y is (16,12)