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45 = 3 x 3 x 5, 72 = 2 x 2 x 2 x 3 x 3. Multiplying all factors would give 3240 but 3 x 3 appears in each so one instance of these can be ignored giving LCM of 360 (8 x 45, 5 x 72)

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15y ago

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The GCF is 9.

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12y ago
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Q: What is common divisor of 72 45 36?
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