Respuesta :

5x-15 is your answer. 5 time x is 5x and 3 times 5 is 15
5x-15 is the answer.

Mulitply the x and the 5, since the x is a variable it just becomes 5x and then you multiply -3 by 5 and since -3 is negative, the answer will be a negative as well. 

Mark as brainliest if someone else answers!

Hope this helps! :)