After you've calculated a least common multiple, always check to be sure your answer can be divided evenly by both numbers. Find the LCM of these sets of numbers. Multiply each factor the greatest number of times it occurs in any of the numbers. 9 has two 3's, and 21 has one 7, so we multiply 3 two times, and 7 once.
Answer:
2
Step-by-step explanation:
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I don't know
Step-by-step explanation:
Theres not enough information in the question
Answer: the expressions above has 2 factors. 3 and 40 + n
Thats soo many words i am sorry that i can’t help tho
