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Jagger Horn
Mathematics
10 September, 13:26
Find the GCF and the LCM of 18 and 20
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Yang
10 September, 13:55
0
GCF = 2
LCM=180
Step by step for GCF=
The prime factorization of 20 is 2,5
The prime factorization of 18 is 2,3
The common multiple they share is 2
Step by step for LCM=
the prime factorization of 18
18 = 2 * 3 * 3
the prime factorization of 20
20 = 2 * 2 * 5
Multiply each factor the greater number of times it occurs to find lcm
LCM = 2 * 2 * 3 * 3 * 5
LCM = 180
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