Hello there (again), and thank you for asking your question(s) here on brainly.
The answer for this is x = 5, let's work it out, shall we?
Ok so, 3 * 5 - 2 = 13. Is this true?
Calculate.
3 * 5 - 2 ===> 15 - 2 = 13
15 - 2 ===> 13 = 13
This is true.
Hope this helped!! ☺♥