Answers

The simplest form of -715/420 is -143/84.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 715 and 420 is 5
2. Divide both the numerator and denominator by the GCD
   -715 ÷ 5/420 ÷ 5
3. Reduced fraction: -143/84
   Therefore, -715/420 simplified to lowest terms is -143/84.

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