Answer:
The numbers are 10 and 7
Explanation:
I will assume you mean 2 numbers
x+y = 17
x-y =3
Add these two equations together
x+y = 17
x-y =3
------------
2x = 20
Divide by 2 numbers
2x/2 = 20/2
x = 10
Now we need to find y
x+y =17
10 +y =17
Subtract 10 from each side
10-10+y =17-10
y =7
The numbers are 10 and 7