Prime factors of 18 are 2, 3 and 3 or as 2 and 32
Prime factors of 28 are 2, 2 and 7 or as 22 and 7
Least common multiple = 22*32*7 = 252
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The least common multiple of 18 and 84 is 252. That is for all you guys out there.
The Least Common Multiple of 18 and 90 is 90.
The least common multiple of 6 , 8 , 18 = 72
The LCM of 16 and 18 is 144. 18x8=144 16x9=144
The LCM (Least Common Multiple) of 9 and 18 id 18 because 9 you can multiply it by 2 and you get 18 and you leave the other 18 the same. So 18 is the least common multiple.18.