Answer: OPTION D.
Explanation:
1. You can solve for the variable "y" from the first equation:

2. Now you must ubstitute the new equation into the second equation:

3. Solve for the variable "x" in order to find its value:

4. Now you need to substitute the value of "x" into the equation
and then evaluate, in order to find the value of "y". This is:

Therefore the solution in the form
, is:
