Answers

The simplest form of -90/168 is -15/28.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 90 and 168 is 6
2. Divide both the numerator and denominator by the GCD
   -90 ÷ 6/168 ÷ 6
3. Reduced fraction: -15/28
   Therefore, -90/168 simplified to lowest terms is -15/28.

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