Answer:
First option
Explanation:
Given the following question:

To find the answer we need to subtract three on both sides, since we are given a positive three ( + 3) instead of a negative three (- 3) If the equation was " x - 3 = 5 " we would then add three on both sides but in this case we have a positive three.




Which means your answer is the first option or "subtract 3 from both sides."
Hope this helps.