Solution
Finding the L C M
The Least Common Multiple ( LCM ) is also referred to as the Lowest Common Multiple ( LCM ) and Least Common Divisor ( LCD) . For two integers a and b, denoted LCM(a,b), the LCM is the smallest positive integer that is evenly divisible by both a and b. For example, LCM(2,3) = 6 and LCM(6,10) = 30.
Question 4
First list all the multiples
4 = 4, 8 12, 16, 20, 24,28,32,36,42...
7= 7, 14 , 21, 28, 35, 42, 49...
The L C M of 4 and 7 is 28
Question 5
First list all the multiples
6 = 6, 12,18, 24,30,36,42,48...
8= 8,16,24,32,40,48,56...
The L C M of 6 and 8 is 24
Question 6