# How do you solve for x: x/3 - 15 = 12 + x?

$X = - \frac{81}{2}$
$\frac{X}{3} - 15 = 12 + X$
$X - 45 = 36 + 3 X$
$2 X = - 81$
$X = - \frac{81}{2}$