No. Seven is not evenly divisible by 420.
420 divided by 7 = 60
7 times
7
It is 420
420/60 = 7 times
7 divide 420 = 0.016666666666666666
420 dividedby 7 = 60
The LCM is 420.
The LCM is 420.
The Least Common Multiple of 12, 7, and 5 is 420.
420
420 = 2940