This doesn't work. The LCM of a pair of numbers has to be equal to or larger than the largest number of the pair. If one of the numbers is 60, the other is 120. 60 and 120 have a GCF of 60, not an LCM.
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the LCM is 2
The LCM is: 120
The GCF and LCM of 10 and 10 is 10.
The answer is 60. The best way to do this is put the numbers in a row and a line beneath them. On the left hand side start with the smallest prime number that goes into them which is 2. The numbers that are divided by 2 go under the line and the numbers not divided by to do the same. Once you cannot use the 2 go up to the next prime number three. Do these steps until you have number ones left on the bottom. Then multiply the numbers on the left hand side to get your LCM.
Any multiple of 60.