encircle the common factor/s of the given pairs of numbers.

Answer:
16.) 51 and 45 = 3
17.) 804 and 306 = 3, 6
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Answer:
16. Common Factor: 3
17. Common Factors: 3, 6
Greatest Common Factor of 51 & 45 = 3
Greatest Common Factor of 804 & 306 = 3
Hope it helps :)
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