What is the LCM of 6 and 7? Prealgebra Factors and Multiples Least Common Multiple 1 Answer Tristan L. Mar 2, 2018 42 Explanation: To find the LCM of two numbers, I like to do #(ab)/(GCF)#, where a and b, in this case, are 6 and 7, and the GCF is the greatest common factor(1, in this case). Answer link Related questions What is the least common multiple of 2, 3, and 7? What is the least common multiple of 9, 36 and 45? What is the least common multiple of 5 and 60? What is the least common multiple of 9, 18 , and 21? What is the least common multiple of 8, 10, 12? What is the least common multiple of 15 and 50? What is the least common multiple of 6 and 9? How do you find the least common multiple of a set of numbers? How do you use least common multiple? How can you find the least common multiple using prime factorization? See all questions in Least Common Multiple Impact of this question 56967 views around the world You can reuse this answer Creative Commons License