Calculate: (0-5)/(-5-1)

Expression: $\frac{ 0-5 }{ -5-1 }$

Removing $0$ doesn't change the value, so remove it from the expression

$\frac{ -5 }{ -5-1 }$

Calculate the difference

$\frac{ -5 }{ -6 }$

A fraction with a negative numerator and negative denominator is always positive

$\begin{align*}&\frac{ 5 }{ 6 } \\&0.8\overset{ \cdot }{ 3 } \end{align*}$