Question

x/5 = x - 12 ????????

Answer 1

$\dfrac{x}{5} =x-12\to\\\\5(x-12)=x\to \\\\ 5x-60=x\to \\\\ 5x-x=60\to \\\\ 4x=60\to \\\\ x= \dfrac{60}{4} \to \\\\ \boxed{x=15}$