Solutions by everydaycalculation.com

The simplest form of -66 is -11.

- Find the GCD (or HCF) of the absolute values of both numerator and denominator

GCD of 6 and 6 is**6** - Divide both the numerator and denominator by the GCD

-6 ÷ 66 ÷ 6 - Reduced fraction: -11

Therefore, -6/6 simplified to lowest terms is -1/1.

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