Solutions by everydaycalculation.com

The reduced form of -189 is -21

- Find the GCD (or HCF) of the absolute values of both numerator and denominator

GCD of 18 and 9 is**9** - Divide both the numerator and denominator by the GCD

-18 ÷ 99 ÷ 9 - Reduced fraction: -21

Use fraction calculator with our all-in-one calculator app: Download for Android, Download for iOS

© everydaycalculation.com