63.
The way to answer this type of problem quickly and efficiently is to multiply some of the numbers together. Pair them. In this problem, I paired them into:
7,3
7,9
3,9
For example, I said to myself "7x3=21. Is 21 a multiple of 9? No." Eliminate that pair.
7,3
Next i did 7x9. 63. This is a multiple of all 3 of these numbers. Don't stop there! Check, just to be safe.
7,9
3x9=27. 27 isn't a factor of 7. Eliminate that pair!. You've solved the problem. 63 is the LCM of 7,3, and 9
The LCM is 63.
The LCM is 126.
The LCM is 504.
The LCM for 3, 9, 8 and 7 is 504
The LCM is 1260.
The Least Common Multiple (LCM) for 5 3 7 9 is 315.
the LCM is 63
The LCM is: 63
63
63
63
The LCM is: 126