$\displaystyle-{5.2}\usepackage{cmbright}\Huge\$ is to the left of $\displaystyle-{2.9}\usepackage{cmbright}\Huge\$ on a number line, so $\displaystyle-{5.2}<-{2.9}\usepackage{cmbright}\Huge\$ . The number 4.7 is to the right of 3.4 on a number line, so $\displaystyle{4.7}>{3.4}\usepackage{cmbright}\Huge\$ .