Answer:
A. 4, 8
Explanation:
4 + 8 = 12 (sum)
8 - 4 = 4 (difference)
The numbers are 4 and 8
Let a and y be the two numbers
x+y = 12
x-y = 4
Add the two equations together
----------------
2x = 16
Divide by 2
2x/2 = 16/2
x = 8
Then find y
x+y =12
8+y = 12
y = 12-8
y = 4
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