Solve for n.Q=5n+5z
\(q=5n+5z\ \ \ \ \ \ \ |subract\ 5z\\\\q-5z=5n\ \ \ \ \ \ \ |divide\ by\ 5\\\ =\frac{q-5z}{5}\\\\Answer\ is\ n=\frac{q-5z}{5}\)
\(Q=5n+5z\\ 5n=Q-5z\\ n=\frac{Q-5z}{5}\)