If [ y = 3 + x ],
then [ x = y - 3 ].
That's all you can tell with the given information.
If you want to know what 'x' and 'y' are, you need one more equation.
x = 0
We don't know and we can't calculate it, until the value of 'x' is given.
x equals 8
9
12!
(0, -3)
(3, 5)
12x = x + 3 11x = 3 x = 3/11
x + 3 = 2x 3 = x x cannot be 2
Symmetric Property of Addition
it equals 3.
6