Editor
$\int \frac{dx}{x^{2}+7x+6}$ is equal to:
Difficulty: Easy
A: 
$\frac{1}{6}ln|\frac{x+6}{x+1}|$
B: 
$\frac{1}{5}ln|\frac{x+1}{x+6}|$
C: 
$ln|\frac{x+1}{x+6}|$
D: 
$\frac{1}{5}ln|\frac{x+6}{x+1}|$
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