SOLUTION: I am a little confused, can someone help me? LCM of 3(y-7)and 21(y-7)

SOLUTION: I am a little confused, can someone help me? LCM of 3(y-7)and 21(y-7)

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Question 127458: I am a little confused, can someone help me?
LCM of 3(y-7)and 21(y-7)
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
What is the smallest number both of these numbers will go into?
21(y-7) Ans.
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