Answers

The simplest form of -351/1680 is -117/560.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 351 and 1680 is 3
2. Divide both the numerator and denominator by the GCD
   -351 ÷ 3/1680 ÷ 3
3. Reduced fraction: -117/560
   Therefore, -351/1680 simplified to lowest terms is -117/560.

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