## Prealgebra (7th Edition)

$\frac{-11}{22}=-0.5$
If we want to add fractions, we have to find a common denominator. Here, this can be 22. This is the lowest common denominator, it is the multiple of both 11 and 22. $\frac{4}{11}-\frac{19}{22}=\frac{2\times4}{2\times11}-\frac{19}{22}=\frac{8}{22}-\frac{19}{22}=\frac{-11}{22}=-\frac{1}{2}=-0.5$