Answer:
Step-by-step explanation:
Answer:
C & D
Step-by-step explanation:
If you use the first answer, the equation becomes 2x + 2y = 16. You could subtract this from equation Q to eliminate x.
The second answer makes equation P -2x - 2y = -16. You could add this to equation Q to eliminate x. You can use both of these methods to eliminate the x term, but if you can only choose one, you should choose the second option.
Take both sides as powers of 4:
Do it again: