Prime factors of 5 = 5
Prime factors of 6 = 3x2
Thus LCM = 3x2x5
=30
Simple, Year 6 stuff.
The LCM is 20.
66
30
It is: 60
20
The LCM of 5 and 6 is 30.
168
12
The LCM is 30.
LCM of 6 and 5 = 30
180
5 and 7 share no common factor, so the LCM is 5*7 = 35