Respuesta :

Answer:

7(3b + 4c)

Step-by-step explanation:

21b + 28c

First, find the common factor of the coefficients (21 and 28).

GCF is 7.

Next, divide out 7 from the equation.

(21b + 28c)/7 = 3b + 4c

Now put the 7 outside of the parenthesis.

7(3b + 4c)

Hope this helped! <3

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