Step-by-step explanation:
We know that...
x+y (from the first pair) corresponds to 8(in the second pair)..
0 (from the first pair) corresponds to x-y (in the second pair)..
Hence,
[tex]x + y = 8 \\ x - y = 0[/tex]
By simply adding the two equations we get,
[tex]2x = 8 \\ x = 4[/tex]
Hence,
By substituting x=4, we get that y=4
Hence,
x=y=4
