Incorrect. Treat the division as a fraction and simplify:

$\displaystyle\frac{{42}}{{{3}{i}}}=\frac{{3}}{{3}}\cdot\frac{{14}}{{i}}=\frac{{14}}{{i}}\usepackage{cmbright}\Huge\$

Because there is still an i in the denominator, you need to rationalize it. The correct answer is $\displaystyle-{14}{i}\usepackage{cmbright}\Huge\$ .