Answers

The simplest form of -5/15 is -1/3.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 5 and 15 is 5
2. Divide both the numerator and denominator by the GCD
   -5 ÷ 5/15 ÷ 5
3. Reduced fraction: -1/3
   Therefore, -5/15 simplified to lowest terms is -1/3.

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