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-\frac{8}{x}
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-\frac{8}{x}
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\frac{13x-3-\left(13x+13\right)}{2x}
Since \frac{13x-3}{2x} and \frac{13x+13}{2x} have the same denominator, subtract them by subtracting their numerators.
\frac{13x-3-13x-13}{2x}
Do the multiplications in 13x-3-\left(13x+13\right).
\frac{-16}{2x}
Combine like terms in 13x-3-13x-13.
\frac{13x-3-\left(13x+13\right)}{2x}
Since \frac{13x-3}{2x} and \frac{13x+13}{2x} have the same denominator, subtract them by subtracting their numerators.
\frac{13x-3-13x-13}{2x}
Do the multiplications in 13x-3-\left(13x+13\right).
\frac{-16}{2x}
Combine like terms in 13x-3-13x-13.
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