Answers

The simplest form of -405/40 is -81/8.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 405 and 40 is 5
2. Divide both the numerator and denominator by the GCD
   -405 ÷ 5/40 ÷ 5
3. Reduced fraction: -81/8
   Therefore, -405/40 simplified to lowest terms is -81/8.

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