Since 1260 is a multiple of 20, it is automatically the LCM.
1260
1260
The LCM of 10, 20, 30, and 45 is 180
LCM(12, 18, 7, 20) = 1260
180
The LCM is 10080.
The LCM is 1260.
The LCM is 1260.
The LCM of 120 and 1260 is 2,520
The LCM is 1260.
The LCM of 9, 14 and 20 is 1260.
The LCM of 4, 9, 5, and 7 is 1,260.