Answers

The simplest form of -129/2400 is -43/800.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 129 and 2400 is 3
2. Divide both the numerator and denominator by the GCD
   -129 ÷ 3/2400 ÷ 3
3. Reduced fraction: -43/800
   Therefore, -129/2400 simplified to lowest terms is -43/800.

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