Respuesta :
You have to get the variable alone. So subtract 5 from both sides. Which will then get you -5n=-20. Then divide both sides by -5, and you get n=4. Hope this helped! :)
-5n+5=-15 because you times the -5 by 4 which equals -20 so then you add the 5 which equals -15. I got the 4 from the n