How do you find the LCM of 27, 18?

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Answer 1 · 2016-12-09T11:02:02

#lcm(18,54)=54#

method 1

list multiples of the two numbers and pick out the common ones.

multiples #18:{18,36,54,72,90,108....}#

multiples#27:{27,54,81,105,142,....}#

#lcm(18,54)=54#

method 2

use: #" "axxb=hcfxxlcm#

#18xx27=9xxlcm#

#lcm=(cancel(18)^2xx27)/cancel(9#

#lcm=2xx27=54#