## Elementary Algebra

$F = \frac{9}{5}C +32$
Multiply both sides by the reciprocal of $\frac{5}{9}$, namely, $\frac{9}{5}$, to obtain: $\frac{9}{5}C = (F-32)$ Add 32 to both sides to obtain: $F = \frac{9}{5}C +32$