Answer
$\color{blue}{\dfrac{13}{k-2}}$
Work Step by Step
The rational expressions have the same denominator so they are similar.
Subtract the numerators and copy the denominator to obtain:
$=\dfrac{(k+7)-(k-6)}{k-2}$
Subtract each term of the subtrahend to obtain:
$=\dfrac{k+7-k-(-6)}{k-2}
\\=\dfrac{k+7-k+6}{k-2}
\\=\color{blue}{\dfrac{13}{k-2}}$
