The question is asking for the value of $\displaystyle{1}{\left(-\frac{{5}}{{8}}\right)}\usepackage{cmbright}\Huge\$ . The identity property of 1 states that $\displaystyle{1}{\left({x}\right)}={x}\usepackage{cmbright}\Huge\$ , so $\displaystyle{1}{\left(-\frac{{5}}{{8}}\right)}=-\frac{{5}}{{8}}\usepackage{cmbright}\Huge\$ .