How do you find the least common multiple of 15 and 2?

1 Answer
Jim G.
Nov 13, 2016

LCM = 30

Explanation:

• Divide the larger number by the smaller number. If it divides exactly then the larger number is the LCM.

• Repeat with multiples of the larger number ( multiply by 2, 3, 4, 5, 6, 7, 8 and 9 ) until exact division is obtained.

#rArr color(red)(15)÷2 color(white)(xxx)X#

#color(red)(15)# is not the LCM

Now try the multiple #2xx15=color(red)(30)#

#rArrcolor(red)(30)÷2 color(white)(xxx) ✔︎#

#rArrcolor(red)(30)# is the LCM.

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