840
LCM(4, 5, 7) = 140
6
6 If the decimal place is 4 or less, go down. 5 or more, go up.
63
Any multiple of 140.
840
3
LCM(4, 5, 7) = 140
There is no such even number.
28
84
It is 420
84
both these number go into the number 112
13,7, and 4 all go into 364.
6