Answers

The simplest form of -414/420 is -69/70.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 414 and 420 is 6
2. Divide both the numerator and denominator by the GCD
   -414 ÷ 6/420 ÷ 6
3. Reduced fraction: -69/70
   Therefore, -414/420 simplified to lowest terms is -69/70.

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