Answers

The simplest form of -1578/1680 is -263/280.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 1578 and 1680 is 6
2. Divide both the numerator and denominator by the GCD
   -1578 ÷ 6/1680 ÷ 6
3. Reduced fraction: -263/280
   Therefore, -1578/1680 simplified to lowest terms is -263/280.

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