Respuesta :

jasmineckim

Answer:

24.

Step-by-step explanation:

1 + 1 + 1 = 3

9 + 9 = 18

3 + 18 = 21 + 3 = 24

I hope this helps, have a nice day.

starbrightt899

Answer:

The answer is 24

Step-by-step explanation:

1+1+1=3

9+9+3=21

21+3=24

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