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The greatest common factor of 90 and 216 is 18

90 = 2 * 32 * 5

216 = 23 * 33

greatest common factor

= 2 * 32

= 2 * 9

= 18

90 / 18 = 5

216 / 18 = 12

because the greatest common factor of these is 1.

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9y ago

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