Answers

The simplest form of -81/18 is -9/2.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 81 and 18 is 9
2. Divide both the numerator and denominator by the GCD
   -81 ÷ 9/18 ÷ 9
3. Reduced fraction: -9/2
   Therefore, -81/18 simplified to lowest terms is -9/2.

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