To find the lcm of 27 and 7, we need to first list the multiples of each number until we find a common multiple.
Multiples of 27: 27, 54, 81, 108, 135, 162, 189, 216, 243, 270...
Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105...
From the above multiples, we can see that the lowest common multiple (lcm) of 27 and 7 is 189. Therefore, the lcm of 27 and 7 is 189.
What is the lcm of 27 and 7. Show workings bit by bit
3 answers
7 = 1*7
27 = 3*3*3
LCM = 7*3*3*3 = 189
or ,
since 7 and 27 have no common factor, their LCM is simply their product.
27 = 3*3*3
LCM = 7*3*3*3 = 189
or ,
since 7 and 27 have no common factor, their LCM is simply their product.
Yes, both methods are correct and give the same answer of LCM = 189. The first method involves listing out the multiples of each number and finding the lowest common multiple, while the second method involves finding the product of the numbers themselves if they have no common factors.