the answer is: 210
The LCM of 21 & 30 is... 210
210.(30 * 7 = 210)(21 * 10 = 210)
The Least Common Multiple (LCM) of 30, 21, and 7 is 210.
The LCM is: 420
Least Common Multiple (LCM) for 30 21 is 210.
210.
210
210
210
The Least Common Multiple (LCM) for 12 21 30 70 is 420.
If that's 15, 21 and 30, the LCM is 210.
210