Respuesta :

Answer:

-3,-14

Step-by-step explanation:

21  

18  (-3)

13   (-5)

6    (-7)

-9 .... 6-9 = -3

-11 ... -3 - 11 = -14

Answer: -3, -14

Step-by-step explanation:

You can see that from 21 to 18 the difference is -3

18 to 13 is -5

13-6 is -7

See the pattern yet?   The difference of the numbers are subtracted by 2 again.

-3, -5, -7, then it's -9. then -11

So 6+(-9) = -3

-3+(-11) = -14