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Anonymous
List the factors.
The factors of 18 are:
1, 2, 3, 6, 9, 18
The factors of 45 are:
1, 3, 5, 9, 15, 45
The common factors are:
1, 3, 9
The Greatest Common Factor:
GCF = 9
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The GCF is 15.
The Greatest Common Divisor (GCD) for 45 80 is 5.
The GCF is 1.
The GCF is 18.
2/5 of 45 = 18