Answer
$\dfrac{19}{24}$
Work Step by Step
Using the $LCD=
24
$, the given expression, $
\dfrac{5}{12}+\dfrac{3}{8}
$, simplifies to
\begin{array}{l}\require{cancel}
\dfrac{2(5)+3(3)}{24}
\\\\=
\dfrac{10+9}{24}
\\\\=
\dfrac{19}{24}
.\end{array}