Question 999317
x + y = 5
x - y = 3


Add the equations: 2x = 8 ---> x = 4


Substitute the result into any of the equations.


x + y = 5
4 + y = 5
y = 1


The solution is (x, y) = (4, 1).


To check:


4 + 1 = 5
4 - 1 = 3