Answers

The simplest form of -42/400 is -21/200.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 42 and 400 is 2
2. Divide both the numerator and denominator by the GCD
   -42 ÷ 2/400 ÷ 2
3. Reduced fraction: -21/200
   Therefore, -42/400 simplified to lowest terms is -21/200.

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