$\displaystyle{3}\frac{{{1}}}{{{2}}}=\frac{{{7}}}{{{2}}}\usepackage{cmbright}\Huge\$ . Convert the pounds to ounces:

$\displaystyle\frac{{7}}{{2}}\ \text{ pounds}\cdot\frac{{{16}\ \text{ ounces}}}{{{1}\ \text{ pound}}}={56}\ \text{ ounces}\usepackage{cmbright}\Huge\$

$\displaystyle{56}+{2}={58}\text{}\usepackage{cmbright}\Huge\$ ounces