Answer: 9(3+2)
Explanation:
The GCF of 27 and 18 is 9 because the factors of 27 are, 1,3,9 and 27 and the the factors of 18 are, 1,2,3,9 and 18.
The greatest factor that they both share is 9.
And 9 times three is 27 and 9 times 2 is 18.
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