Since `x = 4` [first row], we have:

`x + 2 = 4 + 2 = 6` [from the second row]

So `y = 6`.

Now `2y - 3 = 2(6) - 3 = 9 = z` [from the 3rd row].

So `x = 4`, `y = 6` and `z = 9`.

Get the Daily Math Tweet!
IntMath on Twitter