Evaluate
-\frac{20}{99}\approx -0.202020202
Factor
-\frac{20}{99} = -0.20202020202020202
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-\frac{108}{99}+\frac{88}{99}
Least common multiple of 11 and 9 is 99. Convert -\frac{12}{11} and \frac{8}{9} to fractions with denominator 99.
\frac{-108+88}{99}
Since -\frac{108}{99} and \frac{88}{99} have the same denominator, add them by adding their numerators.
-\frac{20}{99}
Add -108 and 88 to get -20.
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