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The LCM of 18 and 40 is: 360
The prime factorization of 18 = 2 x 3 x 3,
The prime factorization of 40 = 2 x 2 x 2 x 5.
The greatest common factor of 18 and 40 is 2, so their LCM = (18 x 40)/2 = 360
Wiki User
∙ 8y ago
Wiki User
∙ 14y agoFind the GCF of (a) and (b), divide (a) by the GCF, then multiply by (b).
40 factors to [2 2 2 5]
18 factors to [2 3 3]
GCF=2
40 / 2 * 18 = 360◄
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