Respuesta :

Answer:

16

Step-by-step explanation:

n=pens

n+9=25

solve for n

n=16

Answer:

8 pens, 17 pencils

Step-by-step explanation:

Let the number of pens be x.

x+9+x=25

2x=16

x=8

Lets check our work:

8+9+8= 25

There are 8 pens.