Answers

The simplest form of -423/189 is -47/21.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 423 and 189 is 9
2. Divide both the numerator and denominator by the GCD
   -423 ÷ 9/189 ÷ 9
3. Reduced fraction: -47/21
   Therefore, -423/189 simplified to lowest terms is -47/21.

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