Answers

The simplest form of -18/9 is -2/1.

Steps to simplifying fractions

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

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