Answer
$\frac{25}{x-6}$
Work Step by Step
$\frac{10}{x-6}-\frac{15}{6-x}$
$\frac{10}{x-6}-\frac{15}{-(-6+x)}$
$\frac{10}{x-6}-\frac{15}{-(x-6)}$
$\frac{10}{x-6}-\frac{-15}{x-6}$
$\frac{10}{x-6}+\frac{15}{x-6}$
$\frac{25}{x-6}$
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