\left. \begin{array} { l } { 8 ^ {n + 1} + 2 ^ {3 n} = 72 }\\ { o = 7 }\\ { p = o }\\ { q = p }\\ { r = q }\\ { s = r }\\ { t = s }\\ { u = t }\\ { v = u }\\ { w = v }\\ { x = w }\\ { y = x }\\ { z = y }\\ { a = z }\\ { \text{Solve for } b \text{ where} } \\ { b = a } \end{array} \right.
Solve for n, o, p, q, r, s, t, u, v, w, x, y, z, a, b
b=7
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