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15+21 and you need to apply the Distributive Property to factor out the GCF

Answer :

DEVISHRI1977GO

Answer:

Step-by-step explanation:

15 = 3 * 5

21  = 3 * 7

GCF = 3

15 + 21 = (3*5) + (3*7)

             = 3*(5 + 7)

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