Posted by joe on Saturday, September 5, 2009 at 9:01pm.
what's the LCM of 9 and 15?
I got 9
is that the correct answer?

math  Ms. Sue, Saturday, September 5, 2009 at 9:06pm
No.
Multiples of 9 are: 9, 18, 27, 36, 45, 54, 63
Multiples of 15 are: 15, 30, 45, 60, 75
What is the smallest number that is a multiple of both numbers?
http://www.math.com/school/subject1/lessons/S1U3L3GL.html

math  joe, Saturday, September 5, 2009 at 9:48pm
45?

math  Ms. Sue, Saturday, September 5, 2009 at 9:52pm
Right. 45 is the LCM of 9 and 15.
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