#### Answer

$\color{blue}{\dfrac{137}{30m}}$

#### Work Step by Step

The expressions are not similar since they have different denominators.
Make the expressions similar using their LCD which is $5(6)(m) = 30m$ to obtain:
$=\dfrac{1\color{red}{(5)}}{6m\color{red}{(5)}}+\dfrac{2\color{red}{(6)}}{5m\color{red}{(6)}}+\dfrac{4\color{red}{(30)}}{m\color{red}{(30)}}
\\=\dfrac{5}{30m}+\dfrac{12}{30m}+\dfrac{120}{30m}
\\=\dfrac{5+12+120}{30m}
\\=\color{blue}{\dfrac{137}{30m}}$