Respuesta :

dinahrosesoto
Could you please provide a picture or post the question again with the image

Answer:

Below in bold.

Step-by-step explanation:

There are no common factors in the first 2 other than 1 so their GCF is 1:-

a) 1

b) 1

c)  80 = 2*2*2*2*5

    100 = 2*2*5*5

So looking for duplicate factors, the GCF = 2*2*5

= 20.

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