LCM of 2 5 7 is 70.
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LCM(5, 3, 7, 2) = 210
The LCM is 840.
lcm(7, 20, 35) = 140 7 = 7 20 = 2^2 x 5 35 = 5 x 7 lcm = 2^2 x 5 x 7 = 140
factoring 56=2*2*2*7 140=2*2*5*7 LCM=2*2*2*5*7=280
lcm(6, 7, 45) = 630. 6 = 2 x 3 7 = 7 45 = 3^2 x 5 lcm = 2 x 3^2 x 5 x 7 = 630