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Answer:
t 126
Explanation:
Find the prime factorization of 18
18 = 2 × 3 × 3
Find the prime factorization of 63
63 = 3 × 3 × 7
Multiply each factor the greater number of times it occurs to find the LCM:
LCM = 2 × 3 × 3 × 7
LCM = 126