## Intermediate Algebra for College Students (7th Edition)

$-\dfrac{35}{36}$
Make the fractions similar using their LCD, which is $36$, to obtain: $=-\dfrac{8}{36} - \dfrac{27}{36}$ RECALL: $a-b = a+(-b)$. Thus, $-\frac{8}{36} - \frac{27}{36}=-\frac{8}{36} +\left(-\frac{27}{36}\right)=-\frac{35}{36}$