$\frac{ 7 }{ 5 }-4 \frac{ 1 }{ 2 }\div\left( -2 \right)-\frac{ 4 }{ 5 }$
Convert the mixed number to an improper fraction$\frac{ 7 }{ 5 }-\frac{ 9 }{ 2 }\div\left( -2 \right)-\frac{ 4 }{ 5 }$
Dividing two negatives equals a positive: $\left( - \right)\div\left( - \right)=\left( + \right)$$\frac{ 7 }{ 5 }+\frac{ 9 }{ 2 }\div2-\frac{ 4 }{ 5 }$
Dividing is equivalent to multiplying by the reciprocal$\frac{ 7 }{ 5 }+\frac{ 9 }{ 2 } \times \frac{ 1 }{ 2 }-\frac{ 4 }{ 5 }$
Multiply the fractions$\frac{ 7 }{ 5 }+\frac{ 9 }{ 4 }-\frac{ 4 }{ 5 }$
Calculate the sum or difference$\begin{align*}&\frac{ 57 }{ 20 } \\&\begin{array} { l }2 \frac{ 17 }{ 20 },& 2.85\end{array}\end{align*}$