Respuesta :

Answer:

21

Step-by-step explanation:

8 5/12 + 6 2/3

8 5/12 + 6 8/12 = 14 13/12

14 13/12 = 15 1/12

15 1/12 + 5 11/12 = 20 12/12

20 12/12 = 21

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