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Anonymous
The LCM is 840.
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The LCM of 42 and 56 and 70 is 840.
factoring
42=2*3*7
70=2*5*7
56=2*2*2*7
LCM=2*2*2*3*5*7=840
42,56,70 lcm
2 42 56 70
7 24,28,35
3 3,4,5
2 1,4,5
2 1,2,5
5 1,1,5
1,1
LCM = 2×7×3×2×2×5= 840
2×7×2×3×2×5=840
84
4
2×2
840
80
The LCM is 210.
LCM of 42 70 and 98 is 1470.
The LCM is: 840
420