Correct. The least common denominator is 6.

$\displaystyle\frac{{1}}{{2}}\cdot\frac{{3}}{{3}}=\frac{{3}}{{6}}\usepackage{cmbright}\Huge\$ and $\displaystyle\frac{{1}}{{3}}\cdot\frac{{2}}{{2}}=\frac{{2}}{{6}}\usepackage{cmbright}\Huge\$ , so the sum becomes $\displaystyle\frac{{3}}{{6}}+\frac{{2}}{{6}}=\frac{{5}}{{6}}\usepackage{cmbright}\Huge\$ .