Answer:
The two numbers are 6 and 9
Step-by-step explanation:
Let the two numbers be x and y
x+y = 15
x-y = 3
Add the two equations together to eliminate y
x+y = 15
x-y = 3
----------------
2x = 18
Divide by 2
2x/2 = 18/2
x = 9
Now we can find y
x+y = 15
9+y = 15
y = 15-9
y = 6
The two numbers are 6 and 9
