Answer:
The answer is -16 and -18
Explanation:
In order to determine the even integer numbers, we have to build two equations with the variables "x" and "y" represent to the numbers.
We know that the numbers are even and consecutive. Any even number has the expression:

where "n" is any integer number.
if
is the first even number, so the second will be
.
In addition, we know that the sum of two even consecutive numbers is -34,
so:

Replacing
:

Finally, the two even consecutive numbers are -16 and -18.