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It is not possible to be certain about it being the "greatest" common factor, because 2 or 3 or 6 may be a factor of x, but the general solution for practical purposes is: 11x = 11*x and -66 = 11*(-1)*2*3 so [g]cf is 11.

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15y ago
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9y ago

The GCF is 11.

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12y ago

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Q: The gcf of 11x and -66?
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