Answers

The simplest form of -39/63 is -13/21.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 39 and 63 is 3
2. Divide both the numerator and denominator by the GCD
   -39 ÷ 3/63 ÷ 3
3. Reduced fraction: -13/21
   Therefore, -39/63 simplified to lowest terms is -13/21.

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