Answer
$0^{\circ}C$.
Work Step by Step
The given formula is
$\Rightarrow C=\frac{5}{9}(F-32)$
Substitute $F=32^{\circ}$.
$\Rightarrow C=\frac{5}{9}(32-32)$
Simplify.
$\Rightarrow C=\frac{5}{9}(0)$
$\Rightarrow C=0$
Hence, the temperature is $0^{\circ}C$.