The LCM is 360.
The LCM of 40 and 45 is 360.
The Least Common Multiple (LCM) of 45, 50, and 40 is 1,800.
The LCM is: 3,960
The LCM is 1800.
360
The LCM is 360.
360
360
360
LCM(40, 45, 50, 55) = 19800
The least common multiple of 45 and 90 is 90, so you can leave 45 out of the calculations entirely. 40 = 4 x 10; 90 = 9 x 10. Thus, the LCM of 40 and 90 is 4 x 9 x 10 = 360.