.
How nice it is to see that you have learned what I taught you once .
After all, I taught you that one of the possible systems is this pair
of equations x = 4 and y = 2.
I remember very well how I explained it to you. . . although you do not refer to my teaching . . .
Now, here is another system of linear equations with the solution (4,2), as you request it :
x + y = 6, (1)
x - y = 2. (2)