Evaluate: -1 (1)/(5)+(-(3)/(5))

Expression: $-1 \frac{ 1 }{ 5 }+\left( -\frac{ 3 }{ 5 } \right)$

Convert the mixed number to an improper fraction

$-\frac{ 6 }{ 5 }+\left( -\frac{ 3 }{ 5 } \right)$

When there is a $+$ in front of an expression in parentheses, the expression remains the same

$-\frac{ 6 }{ 5 }-\frac{ 3 }{ 5 }$

Calculate the difference

$\begin{align*}&-\frac{ 9 }{ 5 } \\&\begin{array} { l }-1 \frac{ 4 }{ 5 },& -1.8\end{array}\end{align*}$