The LCM of 7 and 9 is 63.
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The LCM is: 63
The LCM is: 63
LCM(9, 21) = 63 so the numbers are 63, 63*2 and 63*3.
No, the only way the GCF and LCM of two numbers can be the same is if the numbers are the same.
Yes,LCM of two numbers is their product.