Respuesta :
to find n take 20 - 5 and you get 15 then divide 15 by 2......n = 15/2 or 7.5
I got 7.5 as my answer.
2n+5=20
-5 -5
------------
2n =15
---- -------
2 2
n =7.5
2n+5=20
-5 -5
------------
2n =15
---- -------
2 2
n =7.5