Respuesta :

Answer:

(4, 18)

Step-by-step explanation:

(5 + 3)/2 = 8/2 = 4

(21 + 15)/2 = 36/2 = 18

Answer: (4, 18)

Answer:

(4, 18)

Step-by-step explanation:

(5 + 3)/2 = 4

(21 + 15)/2 = 18

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