5=-5+v/5$${\mathtt{5}} = {\mathtt{\,-\,}}{\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{v}}}{{\mathtt{5}}}}$$
It's often easier to solve an equation if it has no denominators. Multiply both sides by 5:
5(5) = 5(-5 + y/5)
25 = -25 + y
y = 50
+4 
