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Anonymous
The LCM of 3, 20, and 26 is 780.
3 = 3 x 1
20 = 2 x 2 x 5 = 22 x 5
26 = 2 x 13
Using the "highest exponent" method, you multiply
22 x 3 x 5 x 13 = 60 x 13 = 780
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