This is a trick question. When referring to the Lowest Common Multiple, you are comparing two numbers and finding the lowest multiple that they both have in common.
As there is only 1 number, it isn't comparing it. The LCM of 43 and itself would be 43, because 43 is a multiple of itself.
The LCM of 30, 43 is 1290.
The LCM is 86.
The LCM of 20, 43 is 860.
LCM(41, 43) = 1763
Their product.
The LCM of 43 and 47 is 2,021.
The LCM of 6, 42 and 43 is 1806.
The LCM of 21, 43, and 51 is 15351.
LCM(46, 43, 23) = 1978.
The LCM of 12, 23, 28, and 43 is 83,076.
The Least Common Multiple (LCM) of 39 and 43 is 1,677.
The LCM is: 1,935