The only factors common to all three numbers are... 1 & 5
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Well, honey, let me break it down for you. The common factors of 15, 35, and 45 are 1 and 5. So, there you have it. Simple as that.
The answer is 5.
The Least Common Multiple (LCM) for 20 25 35 and 45 is 6,300.
Factors of 45: 1, 3, 5, 9, 15, 45.Factors of 55: 1, 5, 11, 55.Factors of 20: 1, 2, 4, 5, 10, 20.GCF (45, 55, 20) = 5
The factors of 30 are 1, 2, 3, 5, 6, 10, 20, and 30. The factors of 45 are 1, 3, 5, 9 15, and 45. The common factors of 30 and 45 are 1, 3, and 5.