Answers

The simplest form of -172/40 is -43/10.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 172 and 40 is 4
2. Divide both the numerator and denominator by the GCD
   -172 ÷ 4/40 ÷ 4
3. Reduced fraction: -43/10
   Therefore, -172/40 simplified to lowest terms is -43/10.

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