Answer
D.
Work Step by Step
We can see that the equation $C=\frac{5}{9}(F-32)$ is not equivalent to (D), $C=\frac{5}{9}F-32$:
$\frac{5}{9}(F-32)\stackrel{?}{=}\frac{5}{9}F-32$
Multiply by $\frac{9}{5}$:
$\frac{9}{5}(\frac{5}{9}(F-32))\stackrel{?}{=}\frac{9}{5}(\frac{5}{9}F-32)$
$F-32\stackrel{?}{=}F-\frac{9}{5}32$
$F-32\stackrel{?}{=}F-57.6$
Subtract F:
$-32\stackrel{?}{=}-57.6$
$-32\ne -57.6$
This is clearly false, so the equation is not equivalent to D.
