Respuesta :

3 x 7 = 21
Her birthday is in 21 days because there are 7 days in 1 week so you multiply the number of weeks by how many days in a week there is
KeianaLol25

Answer:

21 days

Step-by-step explanation:

There a 7 days in a week, and there a 3 weeks so you would just multiply 7*3 which equal 21. Hope this helped.

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