Answers

The simplest form of -1989/945 is -221/105.

Steps to simplifying fractions

1. Find the GCD (or HCF) of the absolute values of both numerator and denominator
   GCD of 1989 and 945 is 9
2. Divide both the numerator and denominator by the GCD
   -1989 ÷ 9/945 ÷ 9
3. Reduced fraction: -221/105
   Therefore, -1989/945 simplified to lowest terms is -221/105.

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