Respuesta :

Answer:

2x+30

Step-by-step explanation:

The formula for perimeter is

P = 2(l+w)

 = 2(2/3 x+10 + 1/3 x+5)

 = 2(2/3 x + 1/3 x+10+5)

  = 2 (x+15)

Distribute

2x+30