Answer:
x+y = 12 (the sum of 2 unknown integers)
x-y = 6 (the difference of the 2 ints)
you just need to solve this for x and y. you can do this using substitution.
x + y = 12
x - y = 6 ---> x = y+6
(y+6) + y = 12
2y = 6
y = 3
x = 9 ---> when we plug in y to x+y = 12 we get x = 9
Explanation:
