Answers

The simplest form of -1665/3920 is -333/784.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 1665 and 3920 is 5
2. Divide both the numerator and denominator by the GCD
   -1665 ÷ 5/3920 ÷ 5
3. Reduced fraction: -333/784
   Therefore, -1665/3920 simplified to lowest terms is -333/784.

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