Solutions by everydaycalculation.com

The simplest form of -1816 is -98.

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

GCD of 18 and 16 is**2** - Divide both the numerator and denominator by the GCD

-18 ÷ 216 ÷ 2 - Reduced fraction: -98

Therefore, -18/16 simplified to lowest terms is -9/8.

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