Respuesta :

Answer:

56

Step-by-step explanation:

Add:

-1 + 2 + 5 + 8 + 11 + 14 + 17

Separate them to be a little easier(Cross out while you go):

( 8 + 2 ) + ( 11 + 5 ) + ( 17 + -1) + 14

( 10 + 16 ) + ( 16 + 14 )

26 + 30

56

Hope this helps