Respuesta :

Answer:

C

Step-by-step explanation:

just think ab it and you can figure it out using real worl problems

Answer:

B

Step-by-step explanation:

You would have to find the factors of 63 and 42

For 63 it is 3,3,7

For 42 its 2,3,7

They both share a 3 and 7 and when multiplied it gives you 21

Then theirs 2 R's that are being shared and 3 T's that are being shared

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