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There is really so such thing as a "greatest common multiple." Once you find the least common multiple of a set of numbers, you can keep adding the LCM to itself over and over again. Each new number you get will be a common multiple of your set of numbers, but each new number will always be larger than the previous. This means that you can keep adding while the number approaches infinity and you will still never find a greatest multiple.

The first few common multiples of 30 and 70 are: 210, 420, 630, 840, and 1050.

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14y ago
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12y ago

LCM requires at least two numbers; there is no least "common" multiple of 70. The least multiple of 70 (assuming positive integers) would be 70.

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11y ago

The LCM of 30 and 70 is 10.

The LCM of 30 and 75 is 15.

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14y ago

The Greatest Common Factor for 30 and 70 is '10'

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9y ago

LCM is least common multiple of two or more numbers. LCM of 70 and 40 is 280.

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14y ago

LCM of 30 and 70 = 210

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8y ago

The GCF is 10.

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8y ago

The LCM is 280.

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14y ago

10

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10y ago

560

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Q: LCM of 70 and 40
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