Respuesta :

Answer:

I think it should be 15...

Step-by-step explanation:

13 * 3 = 39

5 * 3 = 15

Answer:

Hello! answer: a = 15

Step-by-step explanation:

13 × 3 = 39

and 5 × 3 = 15 so therefore a = 15 HOPE THAT HELPS!

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