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Anonymous
To find the lowest common multiple for numbers, prime factor each the use each Prime number the number of times it appeared the most in each number.
18=2x3x3
20=2x2x5
30=2x3x5
lcm=2x2x3x3x5=180
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The LCM is 90.
The LCM is 450.The LCM is: 450
The LCM is 120.
LCM(15, 20, 30) = 60
The Least Common Multiple (LCM) of 20, 30, and 35 is 420.