Answer:
x=k and y = 0
Step-by-step explanation:
Use elimination method to solve the equation. We will eliminate variable y
x + y = k
x - y = k
_______
2x = 2k
Divide both sides by 2
x=k
Now put the value of x in any equation. We will put the value is equation 1
x+y=k
k+y=k
Now move variable x to the R.H.S
y=k-k
y=0
Thus the solution of the system is x=k and y=0....
