Respuesta :

botikoti24

Answer:

38

Step-by-step explanation:

((29-20)+30)-1

(9+30)-1

39-1

38

Answer:

40

Step-by-step explanation:

Because you do parentheses  first left to right so

  1. 29-20=11
  2. 11+30=41
  3. And last-1=40