Answer:
x = 3
y = 1
Explanation:
So to solve this by addition we have to add both x's, y's and the numbers on the other side of the equal sign:
x + y = 4
x - y = 2
Both y's will cancel out because we are subtracting y from y
Adding 4 +2 = 6
2x = 6 (adding both x gets 2x)
x = 3
Now that we found x we can find y by plugging it into either equation:
3 + y = 4
y = 1
We can check these in both equations:
3 + 1 = 4 4 = 4
3 - 1 = 2 2 = 2
These answers are then proven correct!
I hope this helps! Good luck!