whats the lcm of 4,9,13?
When dealing with several numbers, the lowest(or least) common multiple can be applied consecutively, i.e.
=lcm(4, lcm(9,13)) (or lcm(lcm(4,9), 13)
(i.e. find the lowest common of any 2 numbers, and then find the lowest common multiple of the result and the remaining Read More: ...