$$hog\ x=3$$
$g=\frac{3}{hox}$
$x\neq 0\text{ and }o\neq 0\text{ and }h\neq 0$
$h=\frac{3}{gox}$
$x\neq 0\text{ and }g\neq 0\text{ and }o\neq 0$
