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Start by factoring each of the numbers. Then eliminate duplicate factors, and multiply together whatever factors are left. 42=2x3X7 30=2x3x5 Since the 2 and 3 are duplicated, eliminate the duplications, and multiply 2X3X5X7=210. Answer: 210

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12y ago
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14y ago

210

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Q: What is the lcm of 42 and 30?
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